Mayah Communications. Centauri 200x/300x User Manual. as of Software-Version

Transcription

1 Mayah Communications Centauri 200x/300x User Manual as of Software-Version Order-No. MHH001 Revision Level 02/2003

2 MAYAH, CENTAURI, FLASHCAST are registered trademarks. All other trademarks used are acknowledged with this. Centauri 200x/300x, user manual as of software version Order-No. MHH001 Revision level 02/2003 Copyright by MAYAH Communications GmbH For copying this manual, even by extract, an explicit written permission of MAYAH Communications GmbH is required. 2 MAYAH Communication GmbH

3 Table of Contents 1 Introduction First Steps / Quick Start Controls on the Device Switching On and Off Controlling using the Front Keys Mask Display and Key Controls Set-up Dialog Selection Remote Control using Software Remote Control via RS232 Interface Remote Control via IP Automatic UDP-Scan Installation Scope of Delivery Environment and Operating Conditions Connections Program Installation Start Remote Control Software Control Remote Control Software via the Keyboard using Speed Dialling Exit Program Basic settings Set Display Language Set Time, Date and Date Format Set Display Contrast/Background Lighting Set Headphones Output Enter Identification Number Phonebook Saving Phonebook on a PC Transfer phone book to CENTAURI Create Entry Edit Entry Delete Entry Configuration Individual Parameters Set Encoder Set Decoder Set Inverse Multiplexer ( Format )...37 Centauri user manual revision level 02/2003 3

4 Set Communication Interface Set Communication Basic Conditions Set Device Address Configure ISDN Adapter Setting Dial Protection and ISDN Service Protection Set Quantization Procedure for G Set X.21 parameter Set Time Limit (Timeout) Switch Dual Mode On/Off Set Digital Audio Out Sync Set Signal Type of the Audio In/Out Set Mono Mix Adjust Clipping Level Set Number Of COM Ports To Be Checked Setting the ADAT Interface Display Hardware Equipment at Program Start Switch Progress Display On/Off Switch Disconnect Dialog On/Off Release Software Module Communication Profiles Compile and Save Communication Profiles Edit communication profiles Delete communication profile Save communication profile on the PC Transfer communication profile file to the CENTAURI Connections/Transmissions Automatic Acceptance of Calls Prepare Connection/Transfer Mix Input Signals and Adjust Level Select the correct bit rate Set up Connection Execute and Monitor Transmission Indications Cut Connection Connection Protocol Internet Protocol Remote Control via IP Digital Audio via IP One IP-packet carries more than one frame One frame is carried by more than one IP-packet Header information MPEG Layer 2 / Layer 3 frame header AAC/CT-aacPlus-Header AAC Low Delay HTTP streaming over IP HTTP Streaming Structure of HTTP Command Files Generating HTTP Command Files Executing HTTP Command Files MAYAH Communication GmbH

5 8 Troubleshooting Monitor Device Condition Update Device Software Request of the Current Version Status Software Updating via ISDN Updating via FTP Updating via Internet Updating via the RS232 Remote Port Remote Control Software Registry Entries Remote Control Software Superuser Password Technical Data...81 Glossary...83 Menu Tree shown on the CENTAURI Display...85 Index Appendix ISDN Backup for a Faulty IP Connection Prerequisites Short Introduction to Centauri Event Action Programming Description of ISDN Backup for a Faulty IP Connection How to input all the necessary Commands to the Centauri Necessary Commands ISDN Backup for Faulty X.21/V.35 Connection Prerequisites Short Introduction to Centauri Event Action Programming Description of ISDN Backup for a Faulty X.21/V.35 Connection How to input all the necessary Commands to the Centauri Necessary Commands Establish./Hang. Up Connections By External Switches Prerequisites Short Introduction to Centauri Event Action Programming Description of Starting/Ending Connections using External Switches How to input all the necessary Commands to the Centauri Necessary Commands Event Action Programming Prerequisites Short Introduction to Centauri Event Action Programming How to use the direct command dialog: Example : Event Action Programming Point to Multipoint for Centauri 300x, 350x Prerequisites...97 Point-to-Multipoint Centauri Remote Software Settings with Direct Command Start...98 Centauri user manual revision level 02/2003 5

6 Addressing Observation on Frontpanel HTTP Streaming with Centauri StreamingServer HTTP streaming HTTP Command Files Execution of HTTP Command Files Issues to consider in case of double assignment of a slot J.52 Connections Prerequisites General Synchronizing with J Dual Mode Prerequisites Dual Mode Available Algorithms Settings with the Centauri Remote Software Centauri Remote Software Direct Command Settings with Direct Command Settings with the Centauri Front Panel Multicast Introduction The process of Multicast Centauri and Multicast Centauri ISDN CAPI Trace General concepts of the application interface Common-ISDN-API Overview Message Overview Message Structure Centauri and ISDN CAPI Trace Executing ISDN CAPI Trace on Centauri The New Centauri Keypad Overview View of the old and the new Centauri What has changed Additional Functions Table of Changes Centauri Streaming Server w. Different Media Players Streaming Windows Media Player Real Player Winamp Audio Quality Centauri StreamingServer with Multicast Multicast Multicast with the Centauri StreamingServer Multicast with HTTP-Streaming Multicast with Multicast-addressing Multicast with IP-addressing Using stereo and joint stereo with the CDQPrima Definitions Compatibility problems Solving the problems with the Centauri Ancillary Data over MPEG Layer 3 with Centauri General MAYAH Communication GmbH

7 Details Handshake Event Action Programming with TTL General Example Centauri Centronic Port / TTL I/O Connecting two Centauries with X Connecting Centauri with other devices Connecting two Centauris Requirement for connecting two Centauris IP-connections with two Centauris TCP Particularities on reconnects with IP/UDP Particularities on not recognizable algorithms with UDP Centauri user manual revision level 02/2003 7

8 8 MAYAH Communication GmbH

9 Introduction 1 Introduction The devices of the CENTAURI series are audio gateways; in other words they are audio codecs with extensive network ability (Internet, Intranet, LAN, WAN). They support all common coding procedures and transmission protocols. The 2000 and 3000 models (see Figures 1 and 2) can only be remote controlled. Figure 1: CENTAURI 2000 Figure 2: CENTAURI 3000 The 2001 and 3001 models (see Figures 3 and 4) also have an LC Display and a keyboard for controlling manually. Figure 3: CENTAURI 2001 Figure 4: CENTAURI 3001 The block diagram shows how the CENTAURI models work: Audio Section analog AES/EBU ADAT analog AES/EBU ADAT Audio Input Audio Output Input Processing Monitor Output- Processing Samplerate- Concerter Samplerate Converter Transmit Encoder Multiplexer Receive Decoder Demultiplexer Communication section Communication Output Communication Input 4 ISDN S 0 X.21/V.35 Modem / Ethernet / ATM / DSL 4 ISDN S 0 X.21/V.35 Modem / Ethernet / ATM / DSL Figure 5: CENTAURI block diagram Centauri user manual revision level 08/2002 9

10 First Steps / Quick Start Event-dependent Control CENTAURI Gateways can be programmed such that they react to particular, pre-determined events in a set way. Events can thus be linked with actions. The event-dependent control is described in the Centauri Communication Reference Manual and several Application Notes. Please take note of our notifications (also in the Internet under First Steps / Quick Start The CENTAURI 2001 and 3001 Audio Gateways have a display and a keyboard on the front of the device. You can therefore set up a connection to another communication partner immediately as soon as you have unpacked such a device and connected it up to the mains and ISDN. The information shown on the displays of the CENTAURI 2001 and 3001 Audio Gateways can appear in different languages (can be pre-set, see section "Set Display Language" on page 23). On delivery the devices are set to the English language. This is why all the corresponding illustrations in this handbook show the English language display. To set up an immediate connection, proceed as follows: Switch on the device. The switch is to be found on the rear of the device (see Figure 14 and Figure 15 on page 20). After a short time the CENTAURI start mask appears on the Display: Figure 6: The CENTAURI Start Mask Select CONNECT with the arrow key and press display:.the Connect Dialog will now appear on the Figure 7: Connect Dialog Mask There are already entries with test numbers entered in the phone book when the device leaves the works. If you want to try out one of the available test numbers, select PHONEBOOK and press. A list will then appear showing all the entries set at the works. Select one of the phone book entries with the and keys and press. The device then immediately begins to create a connection to the selected number. You can also enter an ISDN phone number manually and then set up a connection to the same number. This can be any ISDN phone number. To set up an immediate connection to a new subscriber, select DIRECT DIAL and press. Only one input request for the new ISDN phone number appears on the display. Press, use the number keys to enter the number for DEST.1 and the press If required set DEST. 2 and enter the second number in the same manner.. again. See table on page 12 for devices through manufacturing year MAYAH Communication GmbH

11 Introduction Select CONNECT!. The device now immediately starts to set up a connection to the numbers entered. In both cases you can follow the establishment of the connection on the display or in the program window: Figure 8: Establishing a connection If the establishment of the connection is successful, the device automatically synchronizes itself with the partner at the other end of the line. If speakers are connected to the device, you too can hear the audio signal from the other end. The LC Display also jumps to the Status Dialog (see Figure 69 on page 63) and displays the level of the in and out signal. If the establishment of the connection has been successful, the device switches back to the mask that was displayed beforehand (see page 63). If the connection cannot be established, please check the following: Does the ISDN setting correspond to the existing ISDN (see section Configure ISDN- Adapter on page 41)? Is the device connected to an extension number meaning that it is necessary to dial a number (e.g. zero) to get an outside line before a connection can be made (see section Configure ISDN-Adapter on page 41)? If an arrow pointing up and/or down * appears in a display, there are then other lines above or below the lines shown that you can shift up or down using and and then bring onto the display. S See table on page 12 for devices through manufacturing year * The arrows are aligned in accordance with device keypad function assignments through manufacturing year 2001 for CENTAURI software prior to version Centauri user manual revision level 02/

12 Controls on the Device 1.2. Controls on the Device Switching On and Off All CENTAURI Gateways are switched on and off at the rear of the device (see Figure 14 and Figure 15 on page 20). After switching on and in rest mode the display (only available on the 2001/3001) shows the start mask (see Figure 6 on page 10). The Power display above right on the front of the housing lights up after the device is switched on and when in rest mode (see Figure 1 and Figure 3 on page 9) Controlling using the Front Keys Figure 9: CENTAURI 2001/3001 control elements as of manufacturing year 2002 Figure 10: CENTAURI 2001/3001 round segment keys through manufacturing year 2001, see table and footnote below The CENTAURI 2001 and 3001 Audio Gateways have an LC display on the front of the device with a resolution of 128 x 64 pixels, control keys arranged in a ring and a 3-x-4 letter and number keyboard. Both devices can be controlled using these elements. The key configuration is as follows: 0-9,#,* through 2001 : as of 2002 : through 2001 : as of 2002 : Numbers 0-9 and letters if permitted (press respective key several times if necessary); For example, by repeatedly pressing the 2' key the sequence: 2' A' a' B' b' C' c' 2' etc. is generated) Special Key Functions: If a list containing several elements appears at the display, skip to the top of the list by pressing 1, or to the bottom by pressing 9. Speed dialling by means of abbreviated numbers is managed with the and keys. See details on page 61. Move the cursor to the left or the right; In a list: move upwards or downwards; Keys have an automatic repeat function; keeping one of the keys depressed moves the cursor back and forth or up and down; In a list: leave list without activating (cancel dialog, escape function); In an entry to be changed with number or character: delete character on the cursor through 2001 : ENTER as of 2002 : In a list: select entry: otherwise: complete entry, close text output mask. Labeling and assignment of functions to the four portions of the round segment keys (see Figure 9 and Figure 10) was changed as of manufacturing year The functions of the lower right-hand and upper left-hand segments have been swapped. 12 MAYAH Communication GmbH

13 Introduction Mask Display and Key Controls The mask representation and key controls (only CENTAURI 2001/3001) follow the following rules: 1) 2) 3) Figure 11: Mask display The mask title is top left (in Figure 11 1) : Analog Levels ). It is shown inverse. The action description is found to the right of the mask title. In Figure 11 1) the request is SELECT ITEM, since no selection has been made. As soon as one of the list items is selected with the arrow keys and activated by pressing, its name appears in the mask top right (see Figure 11 2) ). This list item now reacts to the key input. In order to leave this list item and save the setting made, one must press. After pressing the key in phone book or communication profile, the OK or CANCEL dialogs appear. In this the OK icon is pre-selected and furnished with a thicker outline (see Figure 11 3) ). Pressing the key again gives positive confirmation of the whole dialog in this case. In all other dialogs the (also altered) setting is immediately taken over from the dialog with. If in the case of phone book or communication profile dialogs you leave the dialog without making any changes, i.e. you want to quit the dialog, then press and select the Cancel icon. When you now press, the dialog is closed without being saved or changed. To cancel all other dialogs it is sufficient to press. If an arrow pointing up and/or down * appears in a display, there are then other lines above or below the lines shown that you can shift up or down using and and then bring onto the display. See table on page 12 for devices through manufacturing year * The arrows are aligned in accordance with device keypad function assignments through manufacturing year 2001 for CENTAURI software prior to version Centauri user manual revision level 02/

14 Controls on the Device Set-up Dialog Selection After you have selected SETUP and pressed Gateways offer the following dialog selections:, the Setup appears. In the Setup CENTAURI New Phonebook Entry (see section CreateEntry on page 28) Edit Phonebook Entry (see section "Edit Entry" on page 30) Delete Phonebook Entry (see section "Delete Entry" on page 31) Audio In-Out (see section "Prepare Connection/Transfer" on page 60) Mono Channel Mix (see section Set Mono Mix on page 49) Digital Audio Out Sync. (see section Set Digital Audio Out Sync. on page 48) Audio Settings (see section "ADAT Interface" on page 52) Audio Encoder (see section "Set Encoder " on page 33) Audio Decoder (see section Set Decoder on page 36) Timeouts (see section "Set Time Limit (Timeout)" on page 46) Analog Levels (see section Set Signal Type of the Audio In/Out" on page 49) Communication Interface (see section "Set Device Address" on page 40) ISDN (see section "Configure ISDN Adapter" on page 41) X.21 (see section Set X.21 Parameter" on page 45) Network (see section Set Device Address" on page 40) New Profile Entry(see section "Compile and Save Communication Profiles" on page 55) Edit Profile Entry (see section Edit Entry" on page 56) Delete Profile Entry (see section "Delete communication profile" on page 56) Date & Time (see section Set Time, Date and Date Format" on page 24) Front Panel (see section "Set Display Contrast/Background Lighting" on page 24) Headphone (see section "Set Headphones Output" on page 25) Identification (see section Technical Data" on page 75) Ancillary (see section Set Communication Basic Conditions" on page 39) Security (see section "ISDN Service Protection" on page 42) Miscellaneous (see section "Set Quantization Procedure for G.711" on page 44) 14 MAYAH Communication GmbH

15 Introduction 1.3. Remote Control using Software All CENTAURI versions can be remote-controlled using a PC with the Windows 95/ 98/ME/ NT/2000 operating systems. For this purpose special PC remote control software is included in the scope of delivery. Figure 12: The main window of the CENTAURI remote control software There must be a connection between PC and CENTAURI either via a serial RS232- interface or via Internet Protocol (IP) Remote Control via RS232 Interface The following are required for remote-controlling the CENTAURI via a serial RS232 interface: PC with RS232 interface 9-pole zero modem cable (included in scope of delivery) The CENTAURI RS232 interface uses the following parameters: Baud rate: 9600, 19200, (delivery condition) 57600, Data bits: 8 Stop bits: 1 Parity: none Protocol: none At the first Start the remote control software scans by default serial port 1 automatically (works settings). If the CENTAURI is controlled by one of the serial interfaces 2 to 8, the number of the ports to be scanned must be increased in the remote control menu item EXPERT OPTIONS correspondingly Remote Control via IP The CENTAURI versions 3000 and 3001 can also be remote-controlled via the network interface card via Internet Protocol. For this it must simply be started on any PC within the network and the network address or the name of the CENTAURI must be entered. The remote control software then creates a Windows socket connection to the CENTAURI via Internet Protocol. The following is needed for remote-controlling the CENTAURI via IP: PC with 10 Mbit/s or 100 Mbit/s Ethernet IP protocol installed IP network and normal RJ45 network cable For controlling via IP, the CENTAURI must be given a free IP address that corresponds to the sub-network mask of your network. Where larger networks are concerned the user should in all events contact the network administrator. Example for assigning an IP Address: A CENTAURI should be operated on a network where the following applies: The IP Addresses to have already been assigned The sub-network mask is The CENTAURI Gateway should contain IP Address Centauri user manual revision level 02/

16 Remote Control using Software Steps for the CENTAURI 2000/3000 First of all the IP Address must be entered using the remote control software (RS232): Select EXPERT DIRECT COMMAND in the remote control software. Enter the command 'ip_address ' and confirm with OK. Close the remote control software. Boot the CENTAURI anew (switch off and then on again) Steps for the CENTAURI 2001/3001 Set SETUP NETWORK ADDRESS on the front of the device and then enter ' '. Boot the CENTAURI anew (switch off and then on again) Enter CENTAURI for Controlling via IP In order to enter a CENTAURI in the remote control software, select SETTINGS REMOTE SETTINGS (manual). The following dialog window opens: Figure 13: Setting the CENTAURI remote control via IP or RS232 Click on IP and enter the IP Address of the CENTAURI that is to be controlled with the software under Add New CENTAURI. Port 2000 has nothing to do with Port 2001 that has been entered in the CENTAURI under Network! Changing one of these two or both values results in communication problems! So that the entries are effective, click on OK. Difference between 'Now' and 'Next Start': - In the case of 'Now' the connection to the given IP Address is activated immediate - In the case of 'Next Start' the connection to the given IP Address is first valid the next time the remote control software is started. Advantage: If the current stage of the remote control software is not closed and the remote control software started again with a new IP Address, several CENTAURIs can be controlled simultaneously. 16 MAYAH Communication GmbH

17 Automatic UDP-Scan Introduction With selecting SETTINGS REMOTE SETTINGS (automatical)it is possible to examine the LAN or the serial interfaces for other Centauris. The following dialog window opens: Enter the Number of com ports for setting the number of serial interfaces that are to be examined or Select UDP Scan Yes for scanning the LAN for other Centauris. Click on OK for activating the scan. The current action is displayed during the scan, e.g. Try Com Port 1 at baud rate All found Centauris are listed below with information about number of comport, baudrate and Centauri name/serial number in case of scanning serial interfaces or IP-address and Centauri name/serial number in case of scanning the LAN. Centauri user manual revision level 02/

18 Remote Control using Software 18 MAYAH Communication GmbH

19 Installation 2 Installation Attention! When installing the CENTAURI in a rack or another assembly you should make sure that the housing rests on a guide rail or cross brace etc. so that they can bear the weight of the device. The device must rest on a support and not just fixed onto the front plate Scope of Delivery 1 CENTAURI 1 Zero modem cable for remote control 1 mains cable (suitable for the country concerned) optional: 1 ISDN cable per ISDN line if ordered: 1 X.21cable if ordered: Digital AES 1 CD this handbook 2.2. Environment and Operating Conditions Attention! Do not subject the device to damp (e.g. proximity to humidifiers etc.), heat (e.g. proximity to radiators, direct sunlight) or mechanical stress (e.g. shaking)! Make sure that the ventilation openings of the device are not obstructed when the device is in operation, so that the air exchange necessary for the cooling of the device is not hindered! The detailed environment and operating conditions are to be found in the chapter "Technical Data" on page 75 f. Centauri user manual revision level 02/

20 Connections 2.3. Connections Audio out L (XLR) Audio out R (XLR) Power Switch/ Audio in L (XLR) Power Connector Audio in R (XLR) ISDN /2001 Serviceport USB Ancillary Data Remote Control TTL in/out ISDN 2 Figure 14: Plug-in field 2000/2001 (rear side, example representation) Audio out L (XLR) Audio out R (XLR) Power Switch/ Audio in L (XLR) Power Connector Audio in R (XLR) AES/EBU ISDN /3001 Serviceport USB Ancillary Data Remote TTL in/out Control LAN X.21/RS422/V35-2 Opt. Digital input/outpu X.21/RS422/V35-1 (TOSlink) Figure 15: Plug-in field 3000/3001 (rear side, example representation) Audio out L (XLR) Audio out R (XLR) Power Switch/ Audio in L (XLR) Power Connector Audio in R (XLR) Configuration LEDs AES/EBU ISDN E1: TS2, MON, DI, DS2 3000/3001 Serviceport USB Ancillary Data Remote TTL in/out Control LAN X.21/RS422/V35-2 Opt. Digital input/outpu X.21/RS422/V35-1 (TOSlink) Figure 16: Plug-in field 3000/3001 with E1 (rear side, example representation) The plugs for the X.21 connection does not conform to standards. Instead of the usual 15 contacts in two rows, the socket plugs on the rear of the CENTAURI 3000/3001 has 26 contacts in three rows. The socket plugs can thus be used either as V.35 or X.21 connection. A corresponding cable with the necessary pin configuration can be obtained from Mayah Program Installation To install the remote control software, start SETUP.exe in the software list on the CD-ROM supplied and follow the installation program instructions. 20 MAYAH Communication GmbH

21 Installation 2.5. Start Remote Control Software To start the remote control software, click on the program icon or double-click on the name of the program file in the program list in Explorer. The remote control program automatically starts the COM interface after it is called up. If a CENTAURI Gateway is connected to one of the COM interfaces, the program recognizes the gateway and synchronizes itself with it automatically Control Remote Control Software via the Keyboard using Speed Dialling As an alternative to controlling using the mouse, most of the CENTAURI remote control software functions can also be controlled using the keyboard. Here an overview: Key Effect <ALT> + <letter> Main window Select the appropriate menu option p Opens the Phonebook the same as clicking on the Phonebook switch with the mouse; c m End All dialogs Enter Escape Phonebook dialog E Enter Delete Insert Opens the Connect dialog window the same as clicking on the Connect switch with the mouse; Calls the Mayah Homepage; is the same as clicking on the central switch surface with the mouse; Ends the CENTAURI s current connection; is the same as clicking on the Disconnect switch with the mouse; Is the same as mouse-clicking on OK ; Is the same as mouse-clicking on Cancel : For editing an entry in Phone book; corresponds to double-clicking on a Phonebook entry with the mouse; Uses the Phonebook entry selected at that particular moment; corresponds to clicking on the Connect switch with the mouse; Deletes the Phonebook entry selected at that particular moment; corresponds to clicking on DEL with the mouse; Creates a new Phonebook entry; corresponds to clicking on New with the mouse; Profile dialog in the <Expert/profiles> menu E Delete Insert For editing the profile selected at that particular moment; corresponds to double-clicking on a profile with the mouse; Deletes the profile selected at that particular moment; corresponds to double-clicking on DEL with the mouse; Creates a new profile; corresponds to double-clicking on New with the mouse; You can find more detailed information in the appropriate sections of this handbook Exit Program To exit the program, click on or select FILE EXIT. Centauri user manual revision level 02/

22 Exit Program 22 MAYAH Communication GmbH

23 Basic settings 3 Basic settings 3.1. Set Display Language The displays on the CENTAURI 2001 and 3001 Audio Gateways can appear in various languages. On delivery the devices are set to English. This is why all the respective illustrations in this handbook show the display in English. The language used in the display can be set using the keys on the front of the housing: Select the SETUP option in the start mask (see Figure 6 on page 10). The Setup mask appears. Select MISCELLANEOUS. The following mask appears: Figure 17: The MISCELLANEOUS mask Select the LANGUAGE line with the key and press. Confirm the restart report and press again. The selection of the possible languages appears. Select the desired language with the or the key and press again. The device starts again ( Reboot ). After this the information shown in the display will be in the selected language. See table on page 12 for devices through manufacturing year Centauri user manual revision level 02/

24 Set Time, Date and Date Format 3.2. Set Time, Date and Date Format CENTAURI Gateways have an internal clock that is supplied with a battery in the event of a power cut etc. This is why it is only rarely necessary to set the internal clock. To set the CENTAURI s internal clock and/or date and/or the format for time displays, proceed as follows: a) Via the front panel: Select the SETUP option in the start mask (see Figure 6 on page 10). The Setup mask appears. Select DATE & TIME. The following mask appears: Figure 18: The DATE & TIME mask The abbreviations in the mask have the following meanings: Y-M-D = Year, Month, Day (format can be sorted) D-M-Y = Day, Month, Year (Germany) M-D-Y = Month, Day, Year (US format) Set the desired information with the, and To close and save press. keys and the number/letter keys. The time and date format set here affects the display in the journal. The time and date information in the journal is shown in the format set here. a) Via the remote software: Select STATUS CENTAURI TIME; Set the desired time and date with the mouse; Click on OK; 3.3. Set Display Contrast/Background Lighting To set the contrast of the LCD and to switch the background lighting on and off, please proceed as follows: Select the SETUP option (see Figure 6 on page 10) in the start mask. The Setup mask appears. Select the FRONTPANEL. The following mask appears: Figure 19: The FRONTPANEL mask Set the desired values for contrast and lighting with the, and the To save press. To quit press. keys. See table on page 12 for devices through manufacturing year MAYAH Communication GmbH

25 Basic settings 3.4. Set Headphones Output To set the headphone audio source and volume proceed as follows: Select the SETUP option (see Figure 6 on page 10) in the Start mask. The Setup mask appears. Select HEADPHONE. The following mask appears: Figure 20: The HEADPHONE mask Set the desired values with the, and the keys. You can select and hear the following signals under SOURCE: Source Headphone left Headphone right Decoder Encoder stereo L R left channel L L right channel R R stereo L R left channel L L right channel R R This is for example of interest for bilingual transmissions. To quit press. See table on page 12 for devices through manufacturing year Centauri user manual revision level 02/

26 Enter Identification Number 3.5. Enter Identification Number At the factory each CENTAURI is assigned a unique serial number. This identifies each CEN- TAURI during communication. In addition the operator can give a CENTAURI Gateway an identification number consisting of numbers and letters (maximum 128 characters). This number can also be assigned identically several times where several CENTAURIs are involved (e.g. company name etc.). This identification number is exchanged both ways during communication. To enter the identification number, proceed as follows: (a) On the front panel: Select the SETUP option in the Start mask (see Figure 6 on page 10). The Setup mask appears. Select IDENTIFICATION. The following mask appears: Figure 21: The IDENTIFICATION mask Enter the desired number with the, and the To close and save press. (b) Via the remote software: Select STATUS CENTAURI IDENTIFICATION; Enter the desired identification; Click on OK; keys and the number/letter keys. See table on page 12 for devices through manufacturing year MAYAH Communication GmbH

27 Phonebook 4 Phonebook You can enter the numbers of partners you often call in a phone book. These entries can be activated by simply pressing a key. Every entry in a phone book is administered by name and contains the respective communication profile. The entries appear sorted alphabetically by name. They can be shifted up and down on the LC display with the and the keys. An entry is always shown inverted. This is selected as soon as you press the key. So that you don t have to endlessly scroll up and down in a long list, you can hop to the beginning of the entries by pressing a number or letter key direct with this symbol. Beyond this, you can skip to the top of the list by pressing 1, or to the bottom by pressing 9. Figure 22: Subscriber list in the phone book; representation on the LC display In the windows of the remote control software on the Windows PC there are the usual scrolling bars for navigating. An entry is selected by mouse-click. You can copy a CENTAURI s phone book on to a connected PC and save it there. On the other hand you can also transfer such a telephone file back onto a CENTAURI where you can use the entries. You therefore have the possibility of distributing one phone book on to as many CENTAURIS as you want Saving Phonebook on a PC To save a CENTAURI s phone book on a PC, select FILE SAVE PHONE BOOK in the main window of the remote control software. A dialog window with the file list then opens. Enter the desired list and a file name on the PC. The file automatically includes the ending.ctr. Click on OK. The phone book is then read out of the CENTAURI and saved in the given file. This is a pure ASCII file that can be edited with a simple text editor Transfer phone book to CENTAURI To transfer a phone book file from PC to CENTAURI, select FILE LOAD CENTAURI FILE in the main window of the remote control software. Then a dialog window opens with the file list. Select the desired hone book file and click on OK. The phone book file is then transferred to the CENTAURI. The phone book entries are then immediately available. When the transfer is made, the existing phone book entries are written over in the CENTAURI. See table on page 12 for devices through manufacturing year Centauri user manual revision level 02/

28 Create Entry 4.3. Create Entry To create a new phone book entry proceed as follows: (a) Via the front panel: Select the SETUP option in the Start mask (see Figure 6 on page 10). The Setup mask appears. Select NEW PHONEBOOK ENTRY and press the key. The following mask appears: Figure 23: The NEW ENTRY mask Select one line after another using the, and keys and enter the desired data. Thereby please note: NAME is the sorting and administration criterion The symbols are inserted at the position where the cursor is. Repeated pressing on one key brings the next symbol to the cursor position. When the desired symbol has been reached, wait a moment: the cursor jumps to the next position automatically after two seconds. If the entry is longer than the number of characters that fit in the input line, the line is shifted so that the cursor position can always be seen. For ENCPROFILE and DECPROFILE you can enter a communication profile. The transfer medium is entered with INTERFACE. This can be Loop, X.21 or ISDN, and in the case of CENTAURI 3000/3001 also NET. DESTination determines the destination address and in the event of an ISDN connection the number of the ISDN connection. In the case of network connections this is where one enters an IP Address. In the case of multiple channel ISDN connections there are respectively more destination fields in which one must enter the numbers of the ISDN phones. End the entry process by pressing the key and confirm the query Save new entry with. The entry has now been saved to the phone book. If you started the entry procedure with the key, you assigned a number yourself right from the start which can be used as an abbreviated dialling number (see section "abbreviated " on page 61). In all other cases, a consecutive number is assigned when the entry is saved. See table on page 12 for devices through manufacturing year MAYAH Communication GmbH

29 Phonebook (b) Via the remote control software: Click on the Phone book button or press the P key. The following dialog window opens: Figure 24: The PHONE BOOK dialog window Click on New or press the Insert key on the keyboard. The following dialog window opens: Figure 25: The NEW PHONE BOOK ENTRY dialog window Enter name, number of the ISDN line or network address and select a communication profile and the interface. To enter, click on OK. This saves the entry in the phone book. A consecutive number is assigned automatically at this time, which can be used as an abbreviated dialling number (see section "abbreviated " on page 61). Centauri user manual revision level 02/

30 Edit Entry 4.4. Edit Entry Existing phone book entries can be edited at any time. (a) Via the front panel: Select the SETUP option in the Start mask (see Figure 6 on page 10). The Setup mask appears. Select EDIT PHONE BOOK and press. A list appears that contains all the entries in the phone book. Select the desired entry with the and keys and the press. The selected entry appears in the same style as for new entries (see Figure 23 on page 28) and can now be edited. Change the data as desired; Save the changes by pressing the key and finish with. (b) Via the remote control software: Click on the Phone book button or press the P key. The Phone book dialog window opens (see Figure 24 on page 29). Select an entry with the scrolling bars or the cursor keys. Double-click on the entry to be edited or press the E key. The Change Phonebook Entry dialog window opens (corresponds to Figure 25 on page 29). Edit the data as desired. To save, click on OK or press the key on the keyboard. The change in the phone book is now saved. See table on page 12 for devices through manufacturing year MAYAH Communication GmbH

31 Phonebook 4.5. Delete Entry Existing phone book entries can be deleted at any time. (a) Via the front panel: Select the SETUP option in the Start mask (see Figure 6 on page 10). The Setup mask appears. Select DELETE PHONE BOOK ENTRY and press. A list appears with all the phone book entries. Select the entry to be deleted with the and keys; Press ; after a security request the entry will be deleted; (b) Via the remote control software: Click on the Phone book button or press the P key. The Phone book dialog window opens (see Figure 24 on page 29). Click on the entry to be deleted. This is marked with an inverse display. Click on DEL to delete or press the Delete key on the keyboard. The marked entry will be deleted from the screen display. Repeat both the above steps for each entry to be deleted. If you click on Cancel, the deletion is not carried out and the entry appears / the entries appear again when the phone book is opened up again. To confirm the deletion and really execute it, click on OK. The entry / entries are now deleted from the phone book. See table on page 12 for devices through manufacturing year Centauri user manual revision level 02/

32 Delete Entry 32 MAYAH Communication GmbH

33 Configuration 5 Configuration 5.1. Individual Parameters If you use the built in phone book function for dialling a communication partner (selecting an already entered communication partner), you do not have to set individual parameters since each phone book entry already contains all the necessary data regarding the individual parameters. If however you dial a communication partner without using the phone book function, i.e. direct by hand, it might also be necessary to set individual connection parameters manually Set Encoder You can set the encoder to 2 operational modes: Dependency: remote ; With this, the encoder is set according to the parameter that it receives from the distant decoder when the connection is made; For all Mayah products (CENTAURI, SendIt) in Automatic Mode (Dependency: Remote, Format: Automatic) it is fundamentally valid that the calling device gives the settings for encoder and decoder. If a connection is made to a device from another manufacturer, the data flow coming from this device is used to determine with which setting this encoder works. This setting is then used for the decoder and also the CENTAURI s encoder. This guarantees that a bi-directional audio connection also comes into being for these devices in most cases, without making additional settings. Dependency: local ; With this the encoder uses the locally set parameters in all cases, regardless of which device is on the other end of the transmission path or what the constitution of the received data flow is. This setting should only be chosen if the receiving device can also recognize the opposite end automatically, which is however incompatible with the CENTAURIs. The local dependency setting for the decoder results in the fact that no adjustment is made to the incoming data flow. If the setting does not suit the data flow, either no, or faulty, audio is decoded. Via Format it is also possible to set CDQ/H.221 (CCS), MUSICTAXI, Micda (if released), Aptx (if released) and J.52 as well as Automatic. The setting CDQ/H.221 switches the CENTAURI into a mode for transmitting MPEG Layer 2 data flows over more than two ISDN B channels to a CCS-CDQPrima. Centauri user manual revision level 02/

34 Individual Parameters Special features for encoder / decoder settings with regard to dependency and format in combination with devices from other manufacturers Encoder Decoder Remote Device Dependency = Remote Format = Auto Dependency = Remote Format = CDQ/H.221 Bit rate = 384 kbit/s stereo 192 kbit/s mono Dependency = Local Format depends upon remote device Format = J.52 Dependency = Local Format = J.52 Type = G.722 Dependency = Remote Format = Auto Dependency = Remote Format = CDQ/H.221 Bit rate = 384 kbit/s stereo 192 kbit/s mono Dependency = Local Format depends upon remote device Dependency = Local Contains other desired parameters CDQPrima with proprietary H.221 Description CENTAURI default setting. The CENTAURI always performs in accordance with the remote device with this setting. There are a few exceptions to this rule which are explained below. When a CDQPrima calls a CENTAURI, automatic remote device recognition is functional (format = auto). If, on the other hand, a CENTAURI calls a CDQPrima, the channel connections are established too quickly. The Format = CDQ/H.221 setting assures that channel connections are established one after the other. Asymmetrical coding, encoder settings identical to remote device decoder settings, decoder settings identical to remote device encoder settings J.52, but with fixed response values: J.52 normally negotiates the highest possible standard separately for each direction. For example, a device also accepts MPEG L3 at the receiver side (if technically feasible), even if it uses MPEG L2 at the transmitter side. However, if the settings Format = J.52 and Dependency = Local have been selected, the CENTAURI alleges that it only understands the decoder settings. G.722 stat. framing: G.722 stat. framing cannot be recognized automatically, because no in-band signaling occurs. The CENTAURI normally uses the G.722 stat. framing timeout to this end (recommended: 25 sec.). A statistical audio signal must be present for signal recognition (not a sinusoidal tone!). X.21/V.35 Dependency = Local Bit rate = path cycle rate A detailed description of the J.52 format and automatic remote device recognition is available as a PDF file in the Application Note (7) from the download page at 34 MAYAH Communication GmbH

35 Configuration To set the encoder, proceed as follows: (a) Via the front panel: Select the SETUP option in the Start mask (see Figure 6 on page 10). The Setup mask appears. Select AUDIO ENCODER and press. The following mask appears: Figure 26: The ENCODER mask Select the parameter to be changed with the and keys and then press the list of all possible values appears. Select the desired value with the and keys and then press the key. Repeat this procedure if required for additional parameters. End the setting by pressing the key. (b) Via the remote control software: Select SETTINGS CODEC. The following dialog window opens: key. A Figure 27: The CODEC SETTINGS dialog window Select the desired value the individual encoder lines. Note: The selection options for the decoder are explained in section Set Decoder on page 36. To make the settings effective, click on OK. See table on page 12 for devices through manufacturing year Centauri user manual revision level 02/

36 Individual Parameters Set Decoder You can pre-set the decoder with 2 operational modes: Dependency: remote ; to this the decoder sets itself to the parameter that it receives from the distant encoder when the connection is made; Dependency: local ; with this the decoder uses the locally set parameters; To set the decoder, proceed as follows: (a) Via the front panel: Select the SETUP option in the Start mask (see Figure 6 on page 10). The Setup mask appears. Select AUDIO DECODER and press. The following mask appears: Figure 28: The DECODER mask Select the parameter to be changed with the and keys and then press the list of all possible values appears. Select the desired value with the and keys and then press the key. Repeat this procedure if required for additional parameters. Exit the parameter setting function by pressing the key. (b) Via the remote control software: Select SETTINGS CODEC. The following dialog window opens: key. A Figure 29: The CODEC SETTINGS dialog window Select the desired values under DECODER... It is only possible to set the decoder parameter if Dependency is set to local. To make the settings effective, click on OK. See table on page 12 for devices through manufacturing year MAYAH Communication GmbH

37 Configuration Set Inverse Multiplexer ( Format ) If a data stream is greater than the capacity of a transmission channel, it is then necessary to use two or even more ISDN B channels to ensure delay-free transmission. The transmitter must therefore split the data over the individual B channels and the receiver must put them back together again properly after the transmission. In the context of MPEG coded audio signals this procedure is often called inverse multiplexing (IMUX). There are several different procedures for inverse multiplexing. The CENTAURI Gateways support the international standard J.52 and the proprietary procedures of various manufacturers. If you know exactly which device is on the receiving end, you can pre-set this device at the multiplexer. The CENTAURI Gateways are however able to recognize the opposite station automatically and set themselves accordingly. To set the multiplexer, proceed as follows: (a) Via the front panel Select the SETUP option in the Start mask (see Figure 6 on page 10). The Setup mask appears. Select AUDIO ENCODER or AUDIO DECODER and press. The following mask appears: Figure 30: The ENCODER or DECODER mask Advance to the FORMAT line with the help of the and keys. Press the key. A list of possible selections appears. Select one of these options with the and keys and save the desired value by pressing the key. End the setting by pressing. (b) Via the remote control software: Select SETTINGS CODEC. The following dialog window opens: Figure 31: The CODEC SETTINGS dialog window Select the desired option under ENCODER FORMAT. Click on OK to save. See table on page 12 for devices through manufacturing year Centauri user manual revision level 02/

38 Individual Parameters Set Communication Interface You can determine via which communication interface a connection is to be established. The following are available ISDN, Loop (for test purposes) and when the CENTAURI is correspondingly configured, X.21 and with the CENTAURI 3000/3001 NET To set the communication interface, proceed as follows: (a) Via the front panel: Select the SETUP option in the Start mask (see Figure 6 on page 10). The Setup mask appears. Select COMMUNICATION INTERFACE and press. The following mask appears: Figure 32: The COMMUNICATION INTERFACE mask Press. Select the desired communication interface with the help of the. End the setting by pressing. (b) Via the remote control software: and keys and press With the remote control software the communication interfaces and if necessary the network address are selected in the Connect dialog (see also section "Set up Connection" on page 61). Figure 33: The CONNECT dialog window with different selected interfaces See table on page 12 for devices through manufacturing year MAYAH Communication GmbH

39 Configuration Set Communication Basic Conditions You can set the subordinate data transmission parameters (baud rate, handshake procedure, number of data bits, parity, stop bits) manually using the front panel of the CENTAURI. Select the option in the device Start mask (see Figure 6 on page 10) die Option SETUP. The Setup mask appears. Select ANCILLARY and press. The following mask appears: Figure 34: The ANCILLARY mask Select the desired parameter with the and keys and press Select the desired value with the and keys and press. Repeat this for each parameter to be changed. Finish the setting by pressing.. See table on page 12 for devices through manufacturing year Centauri user manual revision level 02/

40 Individual Parameters Set Device Address You can assign the CENTAURI an address. Attention! For operational security reasons an IP address should only be entered manually in agreement with the network administrator. Setting the IP address yourself can lead to system disturbance. To enter the address, proceed as follows: (a) Via the front panel: Select the SETUP option in the Start mask (see Figure 6 on page 10). The Setup mask appears. Select NETWORK and press. The following mask appears: Figure 35: The COMMUNICATION INTERFACE mask Select the ADDRESS parameter with the and keys and press the key. Enter the desired address using the and keys, as well as the numeric keys, and then press the key. Repeat this procedure for each address which needs to be changed. Exit the address setting function by pressing the key. (b) Via the remote control software: Select Settings Network. The following dialog window opens Figure 36: The Network Configuration dialog window Enter the address. Click on OK. The entered IP address is now transmitted to the CENTAURI and entered there. For reasons of communication security you should now close the remote control software and restart. Switch off the appropriate CENTAURI and switch it back on after a few seconds. See table on page 12 for devices through manufacturing year MAYAH Communication GmbH

41 Configuration Configure ISDN Adapter If necessary you can set the ISDN adapter. This includes for example the dialling code if the device is used on an extension system. To set the ISDN adapter, proceed as follows: (a) Via the front panel: Select the SETUP option in the Start mask (see Figure 6 on page 10). The Setup mask appears. Select ISDN and press. The following mask appears: Figure 37: The ISDN mask Select the desired parameter with the and keys and press the key. Enter the desired value using the and keys, as well as the numeric keys if applicable, and then press the key. Repeat this procedure for each parameter which needs to be changed. Exit the configuration mode by pressing the key. (b) Via the remote control software: Select SETTINGS ISDN. The following dialog window opens: Figure 38: The ISDN CONFIGURATION dialog window Set the necessary values. Some entries are specific to the country in question and only appear on selecting the D channel protocol: B-Channel To be able to set the MSN of a B channel, the corresponding B channel must first be selected. Get Dialtone The purpose of this item is that a CENTAURI can be used just as well on a telephone system as on a multiple device line. Example: Get Dialtone set to 0 means that all numbers dialed will be preceded by a 0. Pre-dial No. Serves to select the service provider. In Germany, Predial No means that Deutsche Telekom will always be used. To make the new parameter effective, click on OK. See table on page 12 for devices through manufacturing year Centauri user manual revision level 02/

42 Individual Parameters Setting Dial Protection and ISDN Service Protection Undesired calls and network queries can be blocked from the CENTAURI if necessary. Two parameters are provided to this end: Dial protection and ISDN service protection Dial protection allows you to determine whether or not the CENTAURI will accept all calls and network queries, or only calls and network queries from callers who have already been entered to the phone book. ISDN service protection allows you to specify whether or not calls with certain ISDN service indentifications will be ignored by the CENTAURI. The following service identifications can be specified: no profile speech unrestricted dig. info restricted dig. info 3.1 khz audio 7.0 khz audio video packet mode 56 kb/s rate adapt. telephony facsimile 2/3 facsimile 4/1 teletex mixed mode teletex processable mode teletex basic mode videotext telex x.400 x khz telephony video teleph. first video teleph. sec. Each service identification can be individually enabled or disabled. Attention! Do not change dial protection or the service identification settings unless you know exactly what to change. Desired calls might otherwise be inadvertently blocked as well. In order to set dial protection or select permissible service identifications at the housing front panel, proceed as follows: (a) Via the front panel: Select the SETUP option in the start mask (see Figure 6 on page 10). The setup mask appears. Select SECURITY and press the key. The following mask appears: Figure 39: The SECURITY Mask Select Dial Protection or ISDN Service Protection with the press the key. and keys and then See table on page 12 for devices through manufacturing year MAYAH Communication GmbH

43 Configuration Select the desired parameter with the Select on or off and then press the and key; keys and then press the Repeat this procedure for each parameter which needs to be changed. End the setup procedure by pressing the key (twice if necessary). (b) Via the remote control software: key. 1) Activating Dial protection Select SETTINGS OTHERS. The following dialog box appears: Figure 40: The OTHER SETTINGS Dialog Box Select the appropriate parameter setting under Dial in protection ( On or Off ). In order to activate the new setting, click the OK button. 2) Setting up ISDN service protection Select EXPERT ISDN SERVICES. The following dialog box appears: Figure 41: The ISDN SERVICES Dialog Box Click the check boxes which need to be changed. means ISDN service identification disabled. means ISDN service identification enabled. In order to activate your new settings, click the OK button. See table on page 12 for devices through manufacturing year Centauri user manual revision level 02/

44 Individual Parameters Set Quantization Procedure for G.711 Depending on the country, it can be necessary to set quantization procedure G.711 for ISDN telephony. This setting must be made when setting up operation and when the procedure used is changed (e.g. when the location of the device is changed). To set the quantization procedure, proceed as follows: (a) Via the front panel: Select the SETUP option in the Start mask (see Figure 6 on page 10). The Setup mask appears. Select MISCELLANEOUS and press. The MISC mask appears. Figure 42: The MISC mask Press again. Select the respective parameter for G711 ( A LAW for Europe, µ LAW for USA) with the and keys and press the key. If necessary, set other parameters as desired in the same way ( G711 Level, Dualmode and Subcodec ). To end, press. (b) Via the remote control software: Select SETTINGS OTHERS. The following dialog window opens: Figure 43: The OTHER SETTINGS dialog window Select the appropriate parameter ( A LAW for Europe, µ LAW for USA) under G.711 law To make the new parameter effective, click on OK. See table on page 12 for devices through manufacturing year MAYAH Communication GmbH

45 Configuration Set X.21 parameter For the connection via X.21 it is possible to set different parameters. The following can be set: X.21 Channel (1 or 2) X.21 Mode (DTE or DCE) X.21 Clocking (T2, T4, T2T4,..., see Centauri Interface Manual, chap to 1.5.5) X.21 Protocol (X.21 or V.35, compare with note page 16) In X.21 operation a device must give the settings in advance. An encoder must therefore be set to local. To set X.21 parameters, proceed as follows: (a) Via the front panel: Select the SETUP option in the Start mask (see Figure 6 on page 10). The Setup mask appears. Select X.21 (only possible if X.21 interface is available) and press. The X.21 mask appears. Figure 44: The X.21 mask Select MODE and press. Select DTE or DCE and press. Select CLOCK and press.a list of possible selections appears. Select the appropriate clock parameter ( T4 for DTE- Mode, T2T4 for DCE-Mode) with the and keys and press. To complete, press the key twice. (b) Via the remote control software: Select SETTINGS X.21 in the remote control software. The following dialog window opens: Figure 45: The X.21 CONFIGURATION dialog window Select the desired value of the parameter to be altered (X.21 clocking to T4 for DTE mode, X.21 clocking to T2T4 for DCE mode) and then click on OK. The changes will now be transmitted to the CENTAURI. See table on page 12 for devices through manufacturing year Centauri user manual revision level 02/

46 Individual Parameters Set Time Limit (Timeout) For particular transmission procedures (e.g. UDP) it is necessary to set a time limit. To set the time limit, proceed as follows: (a) Via the front panel: Select the SETUP option in the Start mask (see Figure 6 on page 10). The Setup mask appears. Select TIMEOUTS and press. The TIMEOUTS mask appears. Figure 46: The TIMEOUTS mask Select the appropriate parameter ( Disconnect or Stat. framing ) with the and press the key. and keys The time after which the CENTAURI should break off the connection attempt when no synchronization (framing) is achieved is set with the Disconnect parameter. After this time has expired the ISDN channel(s) are automatically cut off. The parameter Stat. framing gives the time interval after which the G.722 decoder should be started automatically in the case of a single channel ISDN connection if no other procedure is recognized. Both parameters are given in seconds. Enter the desired values (seconds) with the number keys. To save press again. Press the key to end. (b) Via the remote control software: Select SETTINGS OTHERS. The following dialog window opens: Figure 47: Additional settings Enter the desired time limit under G.722 stat. framing timeout or Disconnect timeout. G.722 stat. timeout shows how many seconds after the establishment of the connection the CENTAURI switches to G.722 stat. framing if there is no synchronization. This value should only be less than 15 seconds when the opposite end is definitely a device with G.722 stat. framing. To make the new values effective, click on OK. See table on page 12 for devices through manufacturing year MAYAH Communication GmbH

47 Configuration Switch Dual Mode On/Off Dual Mode must be switched on if bilingual sound is to be transmitted or if a completely separate transmission is to be made to different destinations over two channels. To switch Dual Mode on or off, proceed as follows: (a) Via the front panel: Select the SETUP option in the Start mask (see Figure 6 on page 10). The Setup mask appears. Select MISCELLANEOUS and press. The MISC mask appears. Figure 48: The MISC mask Select DUALMODE with the and keys and press. Enter the desired value with the and keys and press To end press the key. (b) Via the remote control software: To switch the Dual Mode on or off, select SETTINGS OTHERS in the remote control software. The following dialog window opens:. Figure 49: Additional settings Select the desired value under Dual Mode at B-channel. To make the new value effective, click on OK. For Dual Mode only mono and sample rates <= 32 khz can be used. See table on page 12 for devices through manufacturing year Centauri user manual revision level 02/

48 Individual Parameters Set Digital Audio Out Sync. To synchronize the CENTAURI with the devices it is connected to, you can set which way the CENTAURI should synchronize itself, This setting is only possible via the front panel, and not via the remote software: Select the SETUP option in the Start mask (see Figure 6 on page 10). The Setup mask appears. Select DIGITAL AUDIO OUT SYNC and press. The DIGITAL AUDIO OUT SYNC mask appears. Figure 50: The DIGITAL AUDIO OUT SYNC mask Press. A list of possible selections appears. Select the appropriate value for Source with the Press.Press the key to end. and keys. See table on page 12 for devices through manufacturing year MAYAH Communication GmbH

49 Set Signal Type of the Audio In/Out If necessary you can set the signal type of the audio in or out. The following are available analog s/pdif toslink aes/ebu adat12 adat34 adat56 and adat78. Configuration (a) Via the front panel: Select the SETUP option in the Start mask (see Figure 6 on page 10). The Setup mask appears. Select AUDIO IN-OUT and press. The AUDIO IN-OUT mask appears. Figure 51: The AUDIO IN-OUT mask Select the audio in or audio out with the Select the desired parameter with the To end press the key. and and keys and press keys and press (b) Via the remote control software: Select SETTINGS AUDIO. The following dialog window opens:.. Figure 52: The AUDIO SETTINGS dialog window Select the desired respective parameter under SOURCE or DESTINATION. To make the new parameter effective, click on OK. See table on page 12 for devices through manufacturing year Centauri user manual revision level 02/

50 Individual Parameters Set Mono Mix If required you can set the mono mix of the Audio In or Out. The following are available MIXED/STEREO LEFT and RIGHT If MIXED/STEREO is selected for Input, the signal of the right Input is mixed with the left Input and passed on to the encoder, with the selection LEFT or RIGHT only the selected Input is used. The setting MIXED/STEREO for the Output means that the signal is available on both outputs, if LEFT or RIGHT are used the signal is only output on the selected channel. These settings are only effective if the encoder and/or decoder is set to mono. (a) Via the front panel: Select the SETUP option in the Start mask (see Figure 6 on page 10). The Setup mask appears. Select MONO CHANNEL MIX and press ). The MONO CHANNEL MIX mask appears. Figure 53: The MONO CHANNEL MIX mask Select the Audio Input or Audio Output with the Select the desired parameters with the and To end press the key. and keys and press keys and press (b) Via the remote control software: Select SETTINGS AUDIO in the remote control software. The following dialog window opens:.. Figure 54: The AUDIO SETTINGS dialog window Select the desired parameter under In Channel or Out Channel. To make the new parameter effective, click on OK. See table on page 12 for devices through manufacturing year MAYAH Communication GmbH

51 Configuration Adjust Clipping Level You can change the input and output level on the CENTAURI to adjust it to the required level of the connected device. The CENTAURIs are fitted with an analog 18 dbu in/output level, in other words, an analog signal with a level of 18 dbu uses up the digital resolution completely, higher levels lead to overdrive. Adjusting the input level means that the digital full level control is not first reached with a value of 18 dbu but already with a newly set value. This makes the input more sensitive. Adjusting the output level has the effect that a digital signal with full level control does not generate 18 dbu but just a signal with the set value. To adjust the clipping level, proceed as follows: (a) Via the front panel: Select the SETUP option in the Start mask (see Figure 6 on page 10). The Setup mask appears. Select ANALOG LEVELS and press. The ANALOG LEVELS mask appears. In this the parameter In-Out are already marked. or Figure 55: The ANALOG LEVELS mask with fixed or adjustable level Press. Select the Input or the Output with the Select the parameter Level with the and key and press The following appear in the Level selection menu: +18 dbu +15 dbu adjust keys and press.. With the and keys select whether you want to select the fixed level to +15/ 18 dbu or set the level manually and press If you have selected Adjust, mark the option Adjust with the. and keys and press. Now you can adjust the level to the desired value between 0 and 18 dbu with the and keys. End the adjustment with. To end press the key. See table on page 12 for devices through manufacturing year Centauri user manual revision level 02/

52 Individual Parameters (b) Via the remote control software: Select SETTINGS AUDIO in the remote control software. The following dialog window opens: Figure 56: The AUDIO SETTINGS dialog window Set the desired level with the mouse under Input Clipping or Output Clipping. To make the new level effective, click on OK Set Number Of COM Ports To Be Checked After the program is started the remote control software automatically requests the set number of CENTAURIs connected to serial COM ports. In delivery condition only COM ports 1 and 2 are requested. The number of COM ports to be requested can however be increased to up to 8. To change the number of COM ports to be requested, proceed as follows: Select EXPERT OPTIONS in the remote control software. The following dialog window opens: Figure 57: The OPTIONS dialog window Click on the drop-down list next to Max. Number Com Ports to Scan, and select the desired number. To make the setting effective, click on OK Setting the ADAT Interface ADAT interface settings are already included in the software for future applications. CENTAURI devices are not currently equipped with this interface. For this reason, the Audio Settings and ADAT Mastermode on/off menu items are not currently functioning. 52 MAYAH Communication GmbH

53 Configuration Display Hardware Equipment at Program Start After the program starts, the remote control software automatically displays the hardware equipment available in the CENTAURI if the corresponding option has been set. To switch the display option on and off, proceed as follows: Select EXPERT OPTIONS in the remote control software. The following dialog window opens: Figure 58: The OPTIONS dialog window Click the control box next to Show Hardware Status at Start, a tick in the control box means display on, no tick means display off. To make the setting effective, click on OK Switch Progress Display On/Off If the main window of the remote control software contains the input focus, the encoder and the decoder are usually requested. The progress of this check is displayed in a dialog window. This progress display can be switched off. To switch this display option on or off, proceed as follows: Select EXPERT OPTIONS in the remote control software. The following dialog window opens: Figure 59: The OPTIONS dialog window Click the control box next to Enhanced Status Messages, a tick in the control box means display on, no tick means display off. To make the setting effective, click on OK. Centauri user manual revision level 02/

54 Individual Parameters Switch Disconnect Dialog On/Off The remote control software gives you the option of ending all existing connections or also just individual connections with a Disconnect. The Disconnect always ends all existing connections. To switch the selection on or off, proceed as follows: Select EXPERT OPTIONS in the remote control software. The following dialog window opens: Figure 60: The OPTIONS dialog window Click the control box next to Enable Disconnect Dialog, A tick in the control box means display on, no tick means display off. To make the setting effective, click on OK Release Software Module The following software modules can be released: SNMP: Order Number CSW01 only CENTAURI 3000/3001: Linear Audio via IP (CSW02) only CENTAURI 3000/3001: MPEG 4 AAC Low Delay only CENTAURI 3000/3001: ADPCM 4SB (Micda) You can obtain the respective release codes on order from Mayah Communications after stating your CENTAURI serial number. When you have received the release key code for the desired software module, enter it as follows: Select EXPERT SET KEY CODE in the remote control software. A dialog window opens in which you must enter the release key code. Figure 61: The KEYCODE dialog window After making the entry, click on OK. This completes the release process. 54 MAYAH Communication GmbH

55 Configuration 5.2. Communication Profiles A communication profile contains several settings for the encoder/decoder, like sample rate, bit rate etc., that are, besides the destination address, necessary for establishing a connection. These settings are described in more detail in section "Individual Parameters" on page 33. The complete encoder/decoder settings can be stored in the profile list under any name you wish. Communication profiles are of importance in establishing a connection to a communication partner. This is why every entry in the phone book is linked with a communication profile. Several phone book entries can be linked with the same communication profile. No phone book entry can be created without stating the communication profile. When creating phone book entries, communication profiles are selected and used via a corresponding drop-down list (see section "Create Entry" on page 28 ff.). 'The communication profiles are stored along with the phone book entries (see section "Saving Phonebook on a PC " on page 27). You can also transfer the communication profiles back to a CENTAURI and use the entries there (see section "Transfer phone book to CENTAURI " on page 27). Once you have created a communication profile file you can distribute the same communication profile file to as many CENTAURIs as you wish Compile and Save Communication Profiles To compile and save a communication profile, proceed as follows: (a) Via the front panel: Select the SETUP option in the Start mask (see Figure 6 on page 10). The Setup mask appears. Select NEW PROFILE ENTRY and press. The following mask appears: Figure 62: The NEW PROFILE mask If you want to save the current setting of the device, you just need to enter a name for the profile. All the current device settings are automatically entered when the mask is opened. If you want to save a setting that is different from the current setting, set the necessary values using the arrow keys. Then assign the profile a name. Save the communications profile by pressing the key and acknowledge the query message with OK by pressing the key. (b) Via the remote control software: Select EXPERT PROFILES and enter the Super-User password. A dialog window opens with the already existing profiles. Click on NEW or press the insert key. A further dialog window will then open. In the simplest case you only need to assign a name. To save click on OK. The profile is then saved. See table on page 12 for devices through manufacturing year Centauri user manual revision level 02/

56 Communication Profiles Edit communication profiles To edit a communication profile, proceed as follows: (a) Via the front panel: Select the SETUP option in the Start mask (see Figure 6 on page 10). The Setup mask appears. Select EDIT PROFILE and press. A list appears that contains all the profiles from which the profile to be edited can be found. Select the communication profile to be edited and press. Then the same mask appears as in Figure 62 on page 55. Alter the desired setting values using the arrow keys. Save the communications profile by pressing the key and acknowledge the device query message with OK by pressing the key. (b) Via the remote control software: Select EXPERT PROFILES. Enter the Super User password (see also section "Remote Control Software Superuser Password " on page 79). A dialog window appears with the existing communication profiles. Select the profile to be edited and double-click on the corresponding line or press on the E key. This leads to another dialog window opening. Alter the desired parameters in this window. To save, click OK in both of the windows Delete communication profile Communication profiles can only be deleted when they are not used in any of the phone book entries. To delete a communication profile, proceed as follows: (a) Via the front panel: Select the SETUP option in the Start mask (see Figure 6 on page 10). The Setup mask appears. Select DELETE PROFILE ENTRY and press. A list of all profiles appears. Select the communication profile to be deleted and press. Respond to the security query with OK by pressing the key. (b) Via the remote control software: Select EXPERT PROFILES. Enter the Super User password. A dialog window with the existing profiles and their parameters opens. Select the profile to be deleted. Click on DEL or press the delete key. To delete, click OK. See table on page 12 for devices through manufacturing year MAYAH Communication GmbH

57 Configuration Save communication profile on the PC The communication profiles are saved along with the phone book entries (see section "Saving Phonebook on a PC " on page 27) Transfer communication profile file to the CENTAURI You can also transfer the communication profiles along with the phone book entries from the PC to a CENTAURI again and use the entries there (see section "Transfer phone book to CENTAURI " on page 27). When the transfer is made, the existing communication profiles are overwritten in the CENTAURI Centauri user manual revision level 02/

58 Communication Profiles 58 MAYAH Communication GmbH

59 Connections/Transmissions 6 Connections/Transmissions CENTAURI Gateways can set up connections to other communication partners on their own. They can also accept incoming calls automatically Automatic Acceptance of Calls CENTAURI Gateways accept incoming calls automatically and synchronize themselves with the station calling corresponding to the configuration. When a call comes in, the Connection Setup mask appears in the display for a short time. When the connection is made the connection data with respect to the opposite end is displayed in this mask as a protocol. Figure 63: The CONNECTION SETUP mask If you are just making settings or entries, you can end the display of this mask with. The mask will however disappear again on its own after a few seconds. Exactly the same display condition is then regenerated as it was prior to the Connect Report. An editing procedure in progress will not be discontinued if a connection is set up from outside. See table on page 12 for devices through manufacturing year Centauri user manual revision level 02/

60 Prepare Connection/Transfer 6.2. Prepare Connection/Transfer Mix Input Signals and Adjust Level Before you set up the connection to your communication partner, we recommend that you set the signals to be transmitted suitably Select the correct bit rate CENTAURI Gateways support the procedures G.711, G.722, Layer 2, Layer 3, AAC, MPEG 4 AAC Low Delay and ADPCM 4SB (see table below), which behave very differently as far as quality and the required bit rate is concerned. Particularly in the case of coding standards based on a psycho-acoustic procedure such as L2, L3 and AAC, there is no longer the direct relationship between audio bandwidth = sampling rate / 2. Rather more, when using MPEG standards it is necessary to find the best compromise for the audio bandwidth for each combination of a bit rate with an sampling rate and a mode. This particular applies with respect to the very low data rates, since the maximum bandwidth can always be used for high data rates. Furthermore, the sampling rate with which the encoder algorithm works does not automatically correspond to the sampling rate with which the digital AES/EBU input has to work. In order to adapt the CENTAURI to e.g. a 96 khz studio environment in this case, the devices have sampling rate converters. It is thus possible to set the sampling rate of the encoder to the optimum value for the transmission procedure and bit rate independent of the environment. How the sampling rate and the bandwidth of a monophonic signal at a bit rate of 64 kbit/s relate to each other, for example in the case of Layer 2, is shown in the following table: Sampling rate (khz) Bandwidth (khz) with Layer You can see that the best sound quality with Layer 2 is achieved with a sampling rate of 24 khz. At a higher sampling rate, the available bandwidth is reduced even more. If a specification states a bandwidth of 20 khz at a data rate of 64 kbit/ s and a sampling rate of 48 khz, the best possible sound quality is not to be expected. If you want to find out more about these relationships, we recommend you study the appropriate literature on the subject. The following sampling rates are recommended as a matter of principle: Mono Stereo 64 kbit/s 128 kbit/s 64 kbit/s 128 kbit/s 192 kbit/s 256 kbit/s G khz G khz Layer 2 24 khz 32 khz 16 khz 32 khz 48 khz 48 khz Layer 3 32 khz 32 khz 24 khz 32 khz 48 khz 48 khz AAC 48 khz 48 khz 48 khz 48 khz 48 khz 48 khz MPEG 4 AAC Low Delay 48 khz 48 khz 48 khz 48 khz 48 khz 48 khz ADPCM 4SB - 32 khz khz Stand. APT-X 16 khz 32 khz 8 khz 16 khz 24 khz 32 khz Enh. APT-X khz 32 khz 8 khz 16 khz 24 khz 32 khz Enh. APT-X 20 12,8 khz 25,6 khz 12,8 khz 19,2 khz 25,6 khz Enh. APT-X 24 10,67 khz 21,3 khz 10,67 khz 16 khz 21,3 khz if released 60 MAYAH Communication GmbH

61 Connections/Transmissions 6.3. Set up Connection (a) Via the front panel: Connections can be established with communications partners in two different ways: either via the start mask and the connect function, or by means of abbreviated dialling. 1) Establishing a connection via the start mask In order to set up a connection to a communications partner via the start mask, proceed as follows: Select the CONNECT option in the Start mask with the arrow key and press. The following mask now appears on the display: Figure 64: The CONNECT-DIALOG mask Select either DIRECT DIAL (enter telephone number directly), LAST (set up the previous connection again) or PHONE BOOK (select subscriber from the phone book). If you have selected LAST, the device immediately starts establishing the connection. Otherwise you should enter the desired phone number (DIRECT DIAL) or select a subscriber from the phone book. In the phone book you enter a letter with the letter keys and the list then skips to the first entry starting with the letter entered. The device then begins to establish a connection to the desired communications partner. 2) Establishing a connection by means of abbreviated dialling In order to establish a connection by means of abbreviated dialling, proceed as follows: Press the key. The SPEED DIAL mask appears. Figure 65: The SPEED DIAL mask This function is not available if configuration functions are currently being used at the Centauri (e.g. parameter settings for the audio encoder, scrolling through journal entries etc.). Press the key. Enter a number at the keypad with a maximum of two digits which has been assigned to phone book entry and press the key. Select CONNECT and press the key. The device now establishes a connection to the corresponding communications partner. See table on page 12 for devices through manufacturing year Centauri user manual revision level 02/

62 Set up Connection (b) Via the remote control software: Click on CONNECT or press the C key (enter phone number direct) or click on PHONE BOOK or press the P key (select subscriber from the phone book). One of the following dialog windows opens, depending on the selected data interface: Figure 66: The CONNECT DIALOG window with various selected interfaces Select the desired parameter in the dialog window. Click on OK. The device then starts to set up the connection to the desired communication partner. You can follow this process on the CENTAURI s display in the CONNECTION SETUP or in the window of the remote control software: Figure 67: The CONNECTION SETUP mask After the connection has been set up successfully, the device switches to the mask that was displayed beforehand. If you want to monitor the existing connection, select STATUS (see the following section Execute and Monitor Transmission ). 62 MAYAH Communication GmbH

63 Connections/Transmissions 6.4. Execute and Monitor Transmission During the transmission you can check and monitor the status of the connection at any time. (a) On the LC Display on the front panel To check and monitor the status of a connection, select STATUS in the Start mask (see Figure 6 on page 10) and press. The modulation display then appears: Figure 68: Modulation display: The right-hand edges of the bars indicate the current value. Specific values: Depite of the normal scala which accent the DB-values in steps of five, there are two particular values diplayed: -9 db : normally used headroom -18 db : with 18 dbu fullscale (default Centauri setting), 18 dbf is equal to 0 dbu Since not all the information relating to a connection can be displayed on the LC display at the same time, the various pieces of status information are spread across several masks. You can cause these masks to be displayed one after another using the left or right arrow keys. The name of the connection is always displayed in the footnote (phone book entry, number of the ISDN line or network name): Figure 69: Encoder status Figure 70: Decoder status Figure 71: Communication channels configured for the connection Note: The values of the encoder/decoder currently in operation are normally shown in the status display on the front panel. If there is no framing, the values configured in the setup are displayed. See table on page 12 for devices through manufacturing year Centauri user manual revision level 02/

64 Execute and Monitor Transmission (b) In the remote control software window The status of the current existing connection is always displayed in the window of the remote control software: Black: time Green: connection time without synchronization Red: connection time with synchronization Number of remote terminal Name of phone book entry (if exists) Lines used Connection Status Name of local Centauri Local setting Dependency Synchronization display Figure 72: Remote control software status display 64 MAYAH Communication GmbH

65 Connections/Transmissions 6.5. Indications The CENTAURI Gateways are able to react to internal and external events. There is more about this topic on page Cut Connection You can cut an existing connection at any time. (a) Via the front panel: In order to break off an existing connection, proceed as follows: 1) Via the start mask Select CONNECT in the start mask (see Figure 6 on page 10) and press the Now select DISCONNECT and press the key once again. key. 2) Via the speed dial key Press the key. The SPEED DIAL mask appears. Figure 73: The SPEED DIAL mask Select DISCONNECT and press the key once again. The connection is broken off immediately. All of the channels utilized by the connection are closed, i.e. both B channels of a two-channel ISDN connection. (b) Via the remote control software: To cut an existing connection, click DISCONNECT in the program window. The connection is cut off immediately. All the channels belonging to a connection are closed, i.e. in the case of a two-channel ISDN connection, both B channels. Figure 74: Disconnect dialog mask, if several connections exist Note: One separate connection can be displayed up to a maximum of 49.7 days (this value depends on the type of cardinal variable in which it is stored, exactly ms). See table on page 12 for devices through manufacturing year Centauri user manual revision level 02/

66 Connection Protocol 6.7. Connection Protocol You can cause the connection protocol (Journal) to be displayed on the display. (a) On the LC display on the front panel Select MISC in the Start mask (see Figure 6 on page 10) and press. Select JOURNAL and press. The journal now appears on the display: Figure 75: Journal The connection direction is displayed well as date and time (for display format see section "Set Time, Date and Date Format " on page 24). The symbol >' means outgoing call (CENTAURI has called), and the symbol <' means incoming call (CENTAURI was called). The address of the partner is displayed behind it. If the device has found the address in the phone book it displays the name of the entry or the address itself. If you select a list entry with or, and press, more information about this connection will appear on the display. Where there is a greater amount of information you can page by pressing or. Figure 76: Information about the selected connection (example) (b) In the remote control software window Prerequisite: IP control The log file can be called up with the menu item <File/Display Log File>. In the menu item <Expert/Options> it is also possible to set whether the log file is displayed simply (only connection set up and cut off) or in detail. Figure 77: The LOGFILE dialog window See table on page 12 for devices through manufacturing year MAYAH Communication GmbH

67 Internet Protocol 7 Internet Protocol So that this handbook is not more extensive than absolutely necessary, we assume basic knowledge about the Internet Protocol (IP). If you are not familiar with the topic Internet Protocol, we recommend you refer to the appropriate literature on the subject. Every CENTAURI Audio Gateway has a network interface card with a 10Base-T/100Base- TX- RJ-45 connection. The connection configures itself to the existing network speed (10 or 100 MBit/sec). The CENTAURI gateways support the Internet Protocol, either connection-orientated (TCP) or without connection (UDP) as a protocol on the network. You can find more detailed descriptions of the various protocols in the Glossary on page 83. All device types from the CENTAURI family can be remote controlled via the network interface. The devices of the CENTAURI 3000 series also permit the transport of digital audio signals via the network interface. Each CENTAURI gateway can be connected to a normal local Ethernet via the network interface. Apart from the physical connection it is only necessary to enter the unique IP address Remote Control via IP For management and control functions the CENTAURI gateways provide two different protocols: In the simplest case a TCP/IP connection is set up with a PC on which the remote control software provided runs. The data exchange is achieved via a simple IP Port Protocol. This protocol can also be used for the development of more complex control systems. For the integration into network structures, CENTAURI gateways can be connected by means of a management interface via the SNMP(v1) (Simple Network Management Protocol). For this the gateway acts as 'Agent', i.e. a manageable device in the network. Information about the current status of the device and the individual interfaces can be requested via SNMP. The gateway can also trigger a network report (Trap) when a particular, predefined event occurs that can be received and evaluated by the management system Digital Audio via IP Besides the monitoring and management functions, the CENTAURI Gateway 3000 family also provides the possibility of audio transport via IP. This means, for example, that a signal lying at the audio input can be transmitted into the network using an TCP or UDP. In the average case of audio data transport via IP, one IP-packet carries exactly one audio frame. Depending on frame length and packet size there is a specific overhead in each IP-packet. An exception can occur if the data transport isn t working correctly due to different possible reasons, e.g. network problems. In this situation, if the IP-packets are refused and have to be sent again, the audio frames are allocated to the IP packets in a different way. Centauri user manual revision level 02/

68 Digital Audio via IP One IP-packet carries more than one frame This would be the normal way of audio transport in a situation described above. As you can see in the following figure, the first IP-packet carries not only the first audio frame but also parts of the second one. The second IP-packet carries the rest of Audio 2 and parts of Audio 3. IP-packet 3 carries the rest of Audio 3 and Audio 4 etc.. Audio Audio 1 Audio 2 Audio 3 Audio 4 Encoder IP IP packet 1 IP packet 2 IP packet 3 IP packet 4 Transport Audio 1 Audio 2 Audio 3 Audio 4 Audio 1 Audio 2 Audio 3 Audio 4 Decoder Audio One frame is carried by more than one IP-packet In specific situations, e.g. if the bit rate is high and the sample rate is low, the frame length can be larger than the packet size. In this case the first IP-packet would only carry parts of the first audio and IP-packet 2 the rest etc.. In both situations it is necessary to get access to the frame header to be able to read the information about frame length, bit rate, sample rate etc.. How to get this information is dealt with in the following chapter. 68 MAYAH Communication GmbH

69 Internet Protocol 7.3. Header information The structure of the headers for MPEG Layer2/3, AAC/CT-aacPlus and AAC Low Delay are described in the following chapters MPEG Layer 2 / Layer 3 frame header { Synch Ident Layer Protection Bitrate SamplFreq Padding Private Mode Modeextension Copyright +--- Original/Copy ++- Emphasis } HEADER_MASK = $FFFE0000;{ } HEADER_MPEG1 = $FFFC0000;{ } HEADER_MPEG1_L3 = $FFFA0000;{ } HEADER_MPEG2_L2 = $FFF40000;{ } HEADER_MPEG2_L3 = $FFF20000;{ } HEADER_MPEG25_L = $FFE20000;{ } SAMPLFREQ_MASK = $00000C00;{ } BITRATE_MASK = $0000F000;{ } PADDING_MASK = $ ;{ } MODE_MASK = $000000C0;{ } MODE_EXT_MASK = $ ;{ } PROTECTION_MASK = $ ;{ } PRIVATEBIT_MASK = $ ;{ } AAC/CT-aacPlus-Header { Synch Ident Layer Protect. absent Profile SamplFreq Private Chan.Configur Origin./Copy Home } HEADER_MPEG2_AAC = $FFF80000;{ } PROTECTION_MASK_AAC = $ ;{ } PROFILE_MASK_AAC = $0000C000;{ } SAMPLFREQ_MASK_AAC = $00003C00;{ } PRIVATEBIT_MASK_AAC = $ ;{ } MODE_MASK_AAC = $000001C0;{ } ORIGINAL_MASK_AAC = $ ;{ } HOME_MASK_AAC = $ ;{ } AAC Low Delay { Synch Length samestream audio mux vers. } HEADER_MPEG4_AAC_LD = $56E00000;{ } HEADER_MASK_AAC_LD = $FFE00000;{ } LENGTH_MASK_AAC_LD = $001FFF00;{ } Centauri user manual revision level 02/

70 HTTP streaming over IP 7.4. HTTP streaming over IP HTTP Streaming In loop-mode operation the Centauri 300x is able to generate one audio stream (encoder) which can be executed by HTML command files stored in the WWW directory of the Centauri. It can be activated from any web client or media player. Note: For streaming with the Centauri 4001 StreamingServer see chapter 10.6, HTTP Streaming with the Centauri StreamingServer Structure of HTTP Command Files The HTML command files have a strictly defined structure (see also sample files): Syntax: <!--#exec cgi="/streamfile.cgi <Param1> <Param2> <Param3> <Param4> <Param5>"--> Parameters: Param1: [SlotNr] Param2: [Algorithm] Param3 [Samplerate] Param4: [Bitrate] Param5: [Mode] SlotNr defines the encoder slot that should run the requested algorithm. This value has to be 1 for Centauri 300x, for there is just one slot available. Algorithm, Samplerate, Bitrate and Mode must be used as defined in the encoder section of the Centauri Gateway, Communication Reference Manual. Streaming with different sample rates does not function correctly unless the rates are multiples of the running sample rates. Example: A mix of 32 and 48 khz does not work. A mix of 8, 16, and 32 khz or a mix of 8, 16 and 48 khz works well. Sample files: Stream1.htm: <!--#exec cgi="/streamfile.cgi 1 mpegl mono"--> Stream2.htm: <!--#exec cgi="/streamfile.cgi 1 mp3pro mono"--> Generating HTTP Command Files A HTTP command file can be generated with any common text editor. It contains one line using the structure described above. Additional lines are not read. The file can be saved under any name with the.htm extension. After generating the command file, it has to be transferred by an FTP client program to the D:\www\ folder at the Centauri, where it is made available via the net. 70 MAYAH Communication GmbH

71 Internet Protocol Executing HTTP Command Files The execution of the command file can be activated by any web client or media player which is part of the net. The following structure must be used: or name]/[command file-name. extension(irrelevant)] Example: http//centauri-address or name/ activates a search in the www folder of the addressed Centauri. The name of the command file is only significant for searching. The extension only defines how the data should be interpreted. This option makes it possible to execute different formats from any web browser, which is important for HTML programming. Example: An HTTP request to STREAM1.mp2, STREAM1.wav or STREAM1.mp3 from a web browser is executed by the web server by the STREAM1.htm HTTP command file. All HTTP requests start an audio stream/encoder with the requested parameter, if no other audio stream/encoder is currently active. After the last HTTP request has been executed by the web client/player, the audio stream/encoder is stopped. Centauri user manual revision level 02/

72 HTTP streaming over IP 72 MAYAH Communication GmbH

73 Troubleshooting 8 Troubleshooting 8.1. Monitor Device Condition If any problems arise with the CENTAURI, it is recommended that you first check the device s operational data. For this purpose the device displays the operational data. (a) Via the front panel: Figure 78: System monitor Figure 79: Versions To display one of these masks, proceed as follows: Select the MISC option in the Start mask (see Figure 6 on page 10) and press Select SYSTEM HEALTH or VERSIONS and press. To close the respective mask again, press. (b) Via the remote control software: The remote control software provides a range of operational and device data displays. These can be accessed via the menu in the main window. Select STATUS <desired dialog window>. The following dialog windows are offered: CENTAURI Identification; change of entry is possible; CENTAURI Time; change of entry is possible; CENTAURI Software Versions CENTAURI Hardware and CENTAURI Health; a tick in the control box means: value in permissible range. The display is not updated. Figure 80: Operational and device data displays See table on page 12 for devices through manufacturing year Centauri user manual revision level 02/

74 Update Device Software 8.2. Update Device Software You can update your device software via ISDN, via the RS232 interface or via the Ethernet interface. If there is a connection to the internet, the current CENTAURI software can be downloaded into the device from the Mayah web site direct. The update process only takes a few minutes, via Ethernet or house network (if present) only a few seconds. Afterwards the device boots itself again automatically, and the new software is then already available. The result is shown on the display. It can also be recognized (e.g. also by the device versions without display) by the lighting up of the LED s: ALARM LED flashes: 0-25% transmitted OVERLOAD LED flashes: 26-50% transmitted CONNECT LED flashes: 51-75% transmitted FRAMED LED flashes: % transmitted All LED s flash: Internal updating after complete transmission Request of the Current Version Status You can let the version data of the system components be displayed. To do this you should proceed as follows: (a) Via the front panel: Select the MISC option in the Start mask (see Figure 6 on page 10) and press. Select VERSIONS and press. A series of system data will then be shown on the display: Figure 81: System component version data To end the display, press. See table on page 12 for devices through manufacturing year MAYAH Communication GmbH

75 Troubleshooting (b) Via the remote control software: Select EXPERT CENTAURI SOFTWARE. A window opens with the desired data: Figure 82: System component version data To close the window again, click on OK Software Updating via ISDN To update the CENTAURI software via ISDN you must set up an ISDN connection to the CENTAURI server. If there is a new software version for the device that is calling, the updating routine will start when you press the key and the update file will be transmitted to your device. To update the software via ISDN, proceed as follows: (a) Via the front panel: Select the MISC option in the Start mask (see Figure 6 on page 10) and press Select SYSTEM UPDATE and press.. Figure 83: System Update Enter the ISDN phone number of the CENTAURI server (in Germany: 0811/ ). Select START UPDATE and press. The update routine now runs automatically. (b) Via the remote control software: Select EXPERT UPDATE CENTAURI VIA ISDN. A dialog window opens. Select the desired software version if necessary. Newer means that it should be updated with a newer software version than is present in the CENTAURI. It is of course also possible to downgrade. Enter the ISDN phone number of the CENTAURI server. Then click on OK. The update routine now runs automatically. See table on page 12 for devices through manufacturing year Centauri user manual revision level 02/

76 Update Device Software Updating via FTP To update the CENTAURI software via RS232/Ethernet interface you have to use the remote control software. Prerequisite is that it is possible to control from the PC via IP. Select EXPERT UPDATE CENTAURI VIA RS232/FTP/INTERNET. A dialog window opens. Click on OK. A Windows dialog window then opens the file manager /Explorer. Select the desired list, then the desired software file ( *.upd ) and then click on OK. When updating via the Internet, the remote control software itself sets up a connection to the Internet via the data transmission network of the PC. The updating routine then runs automatically. The progress of the update is displayed Updating via Internet To update the CENTAURI software via RS232/Ethernet interface you must use the remote control software. Prerequisite is that it is possible to control from the PC via IP and there is an Internet connection. Select EXPERT UPDATE CENTAURI VIA RS232/FTP/INTERNET. A dialog window opens. Click on OK. A Windows file manager/explorer dialog window opens. Select the desired list and then the desired software file ( *.upd ). Click on OK. When updating via the Internet, the remote control software itself sets up a connection to the Internet via the data transmission network of the PC. The updating routine then runs automatically. The updating progress is displayed Updating via the RS232 Remote Port To update the CENTAURI software via RS232Remote Port you have to use the remote control software. Prerequisite is that a control is possible from the PC via RS232. Select EXPERT UPDATE CENTAURI VIA RS232. A dialog window opens. Click on OK in the dialog window. A Windows file manager/explorer dialog window opens. Select the desired list and then the desired software file ( *.upd ) and click on OK. The updating routine then runs automatically. The updating progress is displayed. 76 MAYAH Communication GmbH

77 Troubleshooting 8.3. Remote Control Software Registry Entries It can also be necessary to intervene in the registry directly in order to enter the CENTAURI s to be controlled. In such a case, proceed as follows: Open the group HKEY_CURRENT_USER\Software\Mayah Communications\Centauri remote in the Windows registry Create a new sub-registry with the name IP. Create three new keys in the sub-registry IP with the names Address IPControl Port If more than 1 CENTAURI is to be controlled, create an own key for each further CENTAURI to be controlled in the group IP in addition to Address with the name Address1 (for the first CENTAURI) Address2 (for the second CENTAURI)... etc. Allocate the following values to the keys Address: IP Address of your momentary CENTAURI (e.g ) IPControl: TRUE for IP Control and FALSE for RS232 Control Port: '2000' Port 2000 in the registry has nothing to do with Port 2001 that is entered in the CENTAURI under Network! A change of one or both of these values results in communication problems! Address1: IP Address of the first CENTAURI to be controlled Address2: IP Address of the second CENTAURI to be controlled... etc. Please take into account: All entries are case sensitive. In other words, a strict difference is made between higher and lower case for all entries. The IP Address must correspond to the subnetwork mask of your network. The following entries exist: a) HKEY_CURRENT_USER\Software\Mayah Communications\Centauri Remote Baud rate: Baud rate with RS232 Remote Control Type: Character series ComPort: Com Port with RS232 Control; Type: Character series, in capitals MaxComPorts: Number of Com Ports to be scanned with RS232 Control Type: DWord, Basis: Hex SuperUserPassword: Type: Character series a) HKEY_CURRENT_USER\Software\Mayah Communications\Centauri Remote\Dialogs: EnableDetailedLogFile: Type Character series, in capitals; TRUE = Detailed Log File FALSE = simple Log File EnableDisconnect: Type Character series, in capitals; TRUE = Disconnect Dialog FALSE = no Disconnect Dialog EnableHardwareStatus: Type Character series, in capitals; Centauri user manual revision level 02/

78 Remote Control Software Registry Entries TRUE = Hardware status is displayed at program start FALSE = Hardware status is not displayed at program start EnableProgressDisplay: Type Character series, in capitals; TRUE = Progress display on FALSE = Progress display off EnableSuperUserPassword: Type Character series, in capitals; TRUE = SuperUser password request with Expert Menus FALSE = no SuperUser password request with Expert Menus a) HKEY_CURRENT_USER\Software\Mayah Communications\Centauri Remote\IP Address: Type Character series; Current IP Address Address1 to Address200 Type Character series IP Addresses of CENTAURI s still to be addressed IPControl Type: Character series, in capitals; TRUE=IP Control FALSE=RS232 Control a) HKEY_CURRENT_USER\Software\Mayah Communications\Centauri Remote\Last Dialed Numbers This is where the last dialed ISDN numbers are saved as a character series; Structure of the entries: <B channel>_<order of the numbers> Example: 2_3: 3 rd last dialed number of the 2nd B channel a) HKEY_CURRENT_USER\Software\Mayah Communications\Centauri Remote\Last IP Addresses This is where the last dialed IP addresses are saved as a character series. a) HKEY_CURRENT_USER\Software\Mayah Communications\Centauri Remote\Update UpdateAddress: Type Character series; ISDN updating number 78 MAYAH Communication GmbH

79 Troubleshooting 8.4. Remote Control Software Superuser Password The menu items of the 'Expert' menus can only be accessed after a Superuser Password has been entered. This Superuser Password is defined when you first use the remote control software on your C for the first time. The Superuser Password can be any row of characters. If you no longer know the Superuser Password, it is easy to find it out. It is stored in the registry under: HKEY_CURRENT_USER \ Software \ Mayah Communications \ Centauri Remote \ SuperUserPassword. Switch off Superuser Password Protection You can switch off the protection provided by the Superuser Password. Select EXPERT OPTIONS. The following dialog window then appears: Figure 84: The OPTIONS dialog window Click on the control box beside Enable Super User Password Dialog, so that no tick can be seen there. To make the setting effective, click OK. The password protection is now switched off. Centauri user manual revision level 02/

80 Remote Control Software Superuser Password 80 MAYAH Communication GmbH

81 Technical Data 9 Technical Data Analog Audio Specifications Connections Gold-plated Neutrik 3-pin XLR Input: socket Output: plug A/D converter 24 bit sigma-delta Sampling rates 32, 44.1 and 48 khz Input impedance >25 kohm, symmetrical Output impedance <100 Ohm, symmetrical Above control limit Input: dbu Output: +18 dbu Harmonic distortion <0.005% at 1 khz Signal-to-noise ratio >95 db Speak-over >95 db L/R phase difference <0.5 Coding algorithms ISO/MPEG 1, 2, 2.5 Layer III ISO/MPEG 1, 2 Layer II CCITT G.722 CCITT G.711 For the CENTAURI 3000/3001 also: MPEG-2 AAC optional: ADPCM 4SB, CT-aacPlus, Standard and enhanced apt-x and MPEG 4 AAC Low Delay Data Interface Specification Network Interface Cards ISDN BRI (2B+D) Number of B channels Up to 8 Data rates Layer III: 8 to 320 kb/s in steps of 8 kb/s Layer II:8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128, 144, 160, 192, 224, 256, 320 and 384 kb/s G.722: 48, 56 and 64 kb/s Additional Data Channel Connection DB9, socket Baudrate 1200, 2400, 4800, 9600, 19200, 38400, and Baud Mode 8 data bits, 1 stop bit Handshake Not needed TTL interface Connection DB25, socket Function Indication Control interfaces Keyboard 16 keys with cursor, dial, function and status keys Level display Normal and clip LEDs Remote control Full function extent Interfaces RS232 or IP Ethernet Connection DB9 or RJ-45 socket Bit rates 9600, 19200, 38400, or bps with RS232 con trol Modus 8 data bits, 1 stop bit, no parity bit Centauri user manual revision level 02/

82 Remote Control Software Superuser Password Handshake General Environmental conditions No or XON/XOFF Storage temperature -40 to +70 C (-40 to +158 F) Operating temperature 5 to +45 C (41 to +113 F) Relative moisture 20 to 80%, non-condensing Electromagnetic compatibility EN , EN Power supply Dimensions and weight Height Breadth Depth Net weight 90 to 250 VAC, 47 to 65 Hz, <60 Watt 2U (3.5 in., 8.89 cm) Rack mount: 19 inches (48.26 cm) Table version: 17,13 inches (43.48 cm) 12.2 inches (30.99 cm) About 14.4 lbs. (6.6 Kg) Device Identification Number Each CENTAURI has its own identification number. In order to display your CENTAURI s identification number, proceed as follows: Select the SETUP option in the Start mask (see Figure 6 on page 10) SETUP and press Select IDENTIFICATION and press. The identification number now appears on the display. To close the mask again, press.. See table on page 12 for devices through manufacturing year MAYAH Communication GmbH

83 Technical Data Glossary AAC Advanced Audio Coding; Clipping level The clipping level shows when the A/D converter overdrives. In Germany a clipping level of 15 dbu is usually used. Clipping level (15 dbu) = norm level (6dBu) + headroom (9 dbu) FTP FTP stands for File Transport Protocol and serves the processing of files in a network. FTP superimposes on the Transmission Control Protocol (TCP). The CENTAURI has an FTP Server that permits file access to the CENTAURI Flashmemory. This way, firmware updates can be installed on the CENTAURIs easily and securely. G.711 Coding procedure for data reduction; is used by all ISDN telephones G.722 Coding procedure with a bandwidth of 7kHz (better audio quality) HTTP Abbreviation for Hypertext Transfer Protocol; works in the OSI layer 7. H.221 A protocol with which two devices swap information about which coding procedure they master, and how the data flow is distributed in the case of several ISDN lines. An ITU (Internationale Telekommunikation Union) standard to guarantee the compatibility between devices made by different manufacturers. IP Internet Protocol Multiplexing In principle there are two different procedures for multiplexing. The first method compensates the time delay between two channels by transmitting and measuring a test pattern. If the connection path changes during transmission it leads to breakdowns, and it is necessary to set up a connection again. This method is called BONDING and is mainly used in the data communication field. In audio, principally by Dialog4, MusikTaxi, VP and VP-Pro. The second method (INVERSE MULTIPLEXING) uses a small portion of the data rate for semi- continuous checking of the delay. This method is used with J.52 and for CCS Audio Codecs, such as the CDQPRIMA for example. Audio Anc Data Audio Encoder Invers. Multi plexer Transmission Facilities T Invers. Multi plexer Audio Decoder Audio Anc Data ISDN Integrated Services Digital Network; a service-integrated digital network. J.52 Digital transmission procedure for sound programs for high quality, that use one, two or three 64 kbit/s channels for mono and up to 6 for stereo; MPEG Motion Pictures Expert Group ; data format for transmission. SMTP Abbreviation for Simple Mail Transport Protocol. SNMP TCP SNMP is the abbreviation for Simple Network Management Protocol and represents a standardized interface for the management of network devices. All the parameters of a device can be set via this interface and all statuses can be requested. These individual parameters are referred to as SNMP objects that are put together in the Management Information Base (MIB). The CENTAURI gateways support this protocol optionally. TCP stands for Transmission Control Protocol and organizes a secure data transfer via a network, comparable with a point-to-point connection. Every data package that is sent from the transmitter is signed for by the receiver. If a package gets lost it will be repeated by the transmitter after a particular interval. If a package is received incomplete or faulty, the receiver requests it again. Centauri user manual revision level 02/

84 Remote Control Software Superuser Password In addition, TCP guarantees that the data packages arrive at the receiver in the same order that they were sent by the transmitter. In CENTAURI, TCP is used as the default transport protocol for audio over IP. A TCP connection is always bi-directional, both encoder and decoder are activated. UDP UDP is the abbreviation for User Datagram Protocol and describes an unsecured or connectionless data transfer. UDP does not have any mechanisms for confirming data receipt, nor does it have a procedure for flow control. In other words, UDP does not guarantee that the data packages arrive in the order they were sent in. For audio transport via IP this means that transmission security and order must be ensured by another network instance. UDP can be activated by inserting the letter U in front of the IP destination address. A connection set up with UDP is unidirectional. Only the encoder on the CENTAURI doing the calling is activated. V.35 Interface definition for greater transmission speeds and analog wide- band modems. Works with a data rate of 48 kbit/s and uses a mixture of asymmetrical V.24/V.28 signals and symmetrical V.35 signals. The distance is therefore limited to 15 m. A 34-pin plug connection is used as standard, the mechanical characteristics of which do however vary from country to country. Since in Centauri s case, V.35 and X.21 use the same physical port, a 26-pin plug connection is used here. X.21 ITU-T standard for access to digital networks. As standard, the X.21 interface uses the 15-pin plug connector as per ISO 4903 for mechanical coupling of the interface lines. Since Centauri X.21 and V.35 both use the same physical port, a 26-pin plug is used here. 84 MAYAH Communication GmbH

85 Technical Data Connect Status Setup Menu Tree shown on the CENTAURI Display Disconnect Direct Dial (ISDN) Last (<name>) Phonebook Dest. 1 Dest. 2 Connect! Entry 1 Name Enc-Profile Dec-Profile Interface... Dest 1 Levels Entry n... Encoder Dest n Decoder (List of Entries) Lines ADAT Mastermode (List of Entries) Type Audio In:... Samplerate Audio Out:... Bitrate Input:... Mode New Phonebook Entry Output:... Dependency Edit Phonebook Entry Format Delete Phonebook Entry Source:... Ancillarymode Audio In/Out Bandwidth (Enc.) Mono Channel Mix Disconnect: nn Digital Audio Out Sync B Channel Stat. Framing: nn Audio Settings In-Out:... MSN Audio Encoder Level:... SPID Audio Decoder Interface:... Protocol Timeouts PBX Analog Levels PBX Digits (List of Entries) Communication Interface Predial ISDN (List of Entries) Redials X.21 Backlight: On/Off Redial wait Network Contrast:... Audio Delay New Profile Entry Edit Profile Entry Source:... Interface Delete Profile entry Volume:... Mode Date & Time ID:... Clock Frontpanel SN:... Protocol Headphone Audio Delay Identification Baudrate:... Name Interface Ancillary Databits:... Type Address Security Parity:... Samplerate Netmask Miscellaneous Stopbits:... Bitrate Gateway Handshake:... Mode DNS Server Dial Protection Format Broadcast ISDN Service Protec. Source Port Number Dependency SNMP Server G 711 Options Ancillarymode Transferrate Language:... Duplex Dualmode:... Manual Accept SNMP Traps Subcodec:... Dial Protect. ISDN Packetsize Multipoint:... Dial Protect. IP Audio Delay of System Compon. List of Entries Misc Versions Journal System Health System Update Connection Entries Temp: nn C CPU: nnn MHz Mem: nn MB G 711 G 711 Level G 711 ISDN Service Fan: nn RPM Flash: nn KB Free: nn KB +- nn V (Volt) Address:... Start Update! Centauri user manual revision level 02/

86 Remote Control Software Superuser Password Index A AAC ADAT Interface... 14, 52 adat adat adat adat Mix Input Signals aes/ebu analog Automatic Acceptance B Baud rate Block diagram... 9 C Clipping level Communication profiles COM-port checking Configuration Connection protocol Connections Copyright... 2 Cut connection D Data bits, number of Decoder settings Special features Dial In Protection Dial Protection Digital audio via IP Dual Mode switch on/off E Encoder settings Special features F First steps FTP G G G G711 level parameter Glossary H H Handshake procedure HTTP command files streaming over IP I Indications Installation Internet protocol Inverse Multiplexing IP83 ISDN ISDN adapter, configuring ISDN Service Protection J J K Key code Key controls Keyboard... 9 L LC-display... 9 M Mask display Menu tree Monitor device condition MPEG O Environment conditions P Parity Phone book Create entry... 28, 55 Delete entry Edit entry Prepare connection/transfer Program installation Program, stop Protection, ISDN-Service Q Quick start R Release software module Remote control Remote control via IP RS232-Interface S s/pdif Scope of Delivery Select correct bit rate Service Identification Set decoder MAYAH Communication GmbH

87 Technical Data encoder... 14, 33 multiplexer Set up connection... 38, 61 Setup SMTP SNMP Software, start Speed dial mask Speed dialling... 12, 61 Start mask Stop bits Subcode Superuser password... 56, 79 Switching on/off T TCP Technical data toslink Troubleshooting U UDP Update device software V V X X Centauri user manual revision level 02/

88 Appendix 10 Appendix Centauri user manual revision level 08/

89 Appendix ISDN Backup for a Faulty IP Connection Prerequisites Centauri with system software or later PC with: - min. Pentium 166 MHz - RAM 32 MB - Operating system Windows 95, 98, ME, NT or free serial port (remote control by RS232) or Ethernet card (remote control by IP) Zero modem cable (included in Centauri) if RS232 control is used or all necessary LAN cabling between Centauri and PC Centauri remote control with version or later Note: You can download the current the Centauri system software and the latest remote software from Mayah homepage at section download Short Introduction to Centauri Event Action Programming Please consider that this is not a detailed description of how Centauri event action programming works. It simply aims to give you an impression of its possibilities. Generally Centauri event action programming is just intended to combine events like Alarm on or off Connect on or off Framed on or off Overload on or off TTL input high or low with actions. An action can be defined as a set of Centauri commands Description of ISDN Backup for a Faulty IP Connection After an IP connection loses framing, an ISDN connection should be established automatically for backup How to input all the necessary Commands to the Centauri You can type in all the necessary commands with help of the Centauri remote control software. Just skip to remote item <Expert/Direct Command>. You may be asked for a Superuser Password. This Superuser Password is determined by the first use of Centauri remote on your PC. If the super user is lost you can recover it very easily. It is saved in the registry in: HKEY_CURRENT_USER\Software\Mayah Communications\Centauri Remote\SuperUserPassword. How to use the direct command dialog: Just type in the Centauri command in the command edit field and confirm by pressing the OK button. You ll get the answer in the answer memo box. Centauri user manual revision level 02/

90 ISDN Backup for a Faulty IP Connection Necessary Commands Create the following phonebook entry on the first Centauri To create a phonebook entry via remote control at the first Centauri, first press the PHONEBOOK button and then the NEW button. After this enter the following phonebook entry: Backup_ip <number of encoder profile> <number of decoder profile> isdn phone number 1 phone number 2.. for example: Finally, confirm the new phonebook entry by pressing the OK button. Define the action 'isdnback' at first Centauri Direct command: 'action_create isdnback com_disconnect 0;phone_execentry <number of above created phonebook entry>' Define the action 'isdnback' at second Centauri Direct command: 'action_create isdnback com_interface isdn' Event programming at first and second Centauri Direct command: 'event_set framed_off 1 isdnback connect' Save the events at first and second Centauri Direct command: 'event_save' 90 MAYAH Communication GmbH

91 Appendix ISDN Backup for Faulty X.21/V.35 Connection Prerequisites Centauri with system software or later PC with: - min. Pentium 166 MHz - RAM 32 MB - Operating system Windows 95, 98, ME, NT or free serial port (remote control by RS232) or Ethernet card (remote control by IP) Zero modem cable (included in Centauri) if RS232 control is used or all necessary LAN cabling between Centauri and PC Centauri remote control with version Note: You can download the current Centauri system software and the latest remote software from the download section of the Mayah homepage at Short Introduction to Centauri Event Action Programming Please consider that this is not a detailed description of how Centauri event action programming works. It simply aims to give you an impression of its possibilities. Generally Centauri event action programming is just intended to combine events like Alarm on or off Connect on or off Framed on or off Overload on or off TTL input high or low with actions. An action can be defined as a set of Centauri commands Description of ISDN Backup for a Faulty X.21/V.35 Connection If a X.21/V.35 connection loses framing, an ISDN connection should be established automatically for backup. When the X.21/V.35 dedicated line is back, it is then necessary to hang up the ISDN line to re-establish the X.21/V.35 connection. Please note that it will not be automatically detected that the X.21/V.35 is back. The parameters of the connections in the following example are: X.21 dedicated line: MPEGL2, 256 kbit/s, 48 khz, stereo ISDN MPEGL2, 128 kbit/s, 48 khz, joint stereo How to input all the necessary Commands to the Centauri You can type in all the necessary commands with help of the Centauri remote control software. Just skip to remote item <Expert/Direct Command>. You may be asked for a Superuser Password. This Superuser Password is determined by the first use of Centauri remote on your PC. If the super user gets lost you can recover it very easily. It is saved in the registry at: HKEY_CURRENT_USER\Software\Mayah Communications\Centauri Remote\SuperUserPassword. How to use the direct command dialog: Just type in the Centauri command in the command edit field and confirm by pressing the OK button. You ll get the answer in the answer memo box. Centauri user manual revision level 02/

92 ISDN Backup for Faulty X.21/V.35 Connection Necessary Commands Create the following phonebook entry on the first Centauri To create a phonebook entry via remote control at the first Centauri, first press the PHONEBOOK button and then the NEW button. After this enter the following phonebook entry: Backup_ip <number of encoder profile> <number of decoder profile> isdn phone number 1 phone number 2.. for example: Finally confirm the new phonebook entry by pressing the OK button. Define the action 'isdnback' at first Centauri Direct command: action_create isdnback event_reset framed_off 1;com_disconnect 0;com_waitmsecs 3000;com_interface isdn;phone_execentry <number of above created phonebook entry>;event_set connect_off 1 normal true Define the action normal at first Centauri Direct command: action_create normal event_reset connect_off 1;com_disconnect 0;com_waitmsecs 500;com_interface x.21;enc_slave local;enc_bitrate ;com_waitmsecs 500;com_connect 1;event_set framed_off 1 isdnback true Define the action 'isdnback'at second Centauri Direct command: action_create isdnback event_set framed_off 1 normal true;com_waitmsecs 4000;com_disconnect 1; com_waitsecs 1000; com_interface isdn Define the action normal at second Centauri Direct command: action_create normal com_disconnect 0;com_waitmsecs 3000;com_interface x.21;enc_slave remote;enc_bitrate ;com_connect 1 Event programming at first Centauri Direct command: event_set framed_off 1 isdnback true Event programming at second Centauri Direct command: event_set framed_off 1 normal true Save the events at first and second Centauri Direct command: 'event_save' 92 MAYAH Communication GmbH

93 10.3. Establish./Hang. Up Connections By External Switches Appendix Prerequisites Centauri with system software or later PC with: - min. Pentium 166 MHz - RAM 32 MB - Operating system Windows 95, 98, ME, NT or free serial port (remote control by RS232) or Ethernet card (remote control by IP) Zero modem cable (included in Centauri) if RS232 control is used or all necessary LAN cabling between Centauri and PC Centauri remote control with version or later Note: You can download the current Centauri system software and the latest remote software from the download section of the Mayah homepage at Short Introduction to Centauri Event Action Programming Please consider that this is not a detailed description of how Centauri event action programming works. It simply aims to give you an impression of its possibilities. Generally Centauri event action programming is just intended to combine events like Alarm on or off Connect on or off Framed on or off Overload on or off TTL input high or low with actions. An action can be defined as a set of Centauri commands Description of Starting/Ending Connections using External Switches Closing of input A should execute phonebook entry 1. Opening of input A should hangup connection How to input all the necessary Commands to the Centauri You can type in all the necessary commands with help of the Centauri remote control software. Just skip to remote item <Expert/Direct Command>. You may be asked for a Superuser Password. This Superuser Password is determined by the first use of Centauri remote on your PC. If the Superuser gets lost you can recover it very easily. It is saved in the registry at: HKEY_CURRENT_USER\Software\Mayah Communications\Centauri Remote\SuperUserPassword. How to use the direct command dialog: Just type in the Centauri command in the command edit field and confirm by pressing the OK button. You ll get the answer in the answer memo box. Centauri user manual revision level 02/

94 Establish./Hang. Up Connections By External Switches Necessary Commands Define action phone001 Direct command: 'action_create phone001 phone_execentry 1' Note: Execute phonebook entry 1 Define action hangup Direct command: 'action_create hangup com_disconnect 0' Note: Disconnect all lines Event Programming Direct commands: 'event_set centronic_a_on 1 phone001 true' 'event_set centronic_a_off 1 hangup true' Save Events Direct command: 'event_save 94 MAYAH Communication GmbH

95 Appendix Event Action Programming Prerequisites Centauri with system software or later PC with: - min. Pentium 166 MHz - RAM 32 MB - Operating system Windows 95, 98, ME, NT or free serial port (remote control by RS232) or Ethernet card (remote control by IP) Zero modem cable (included in Centauri) if RS232 control is used or all necessary LAN cabling between Centauri and PC Centauri remote control with version or later Note: You can download the current Centauri system software and the latest remote software from the download section of the Mayah homepage at Short Introduction to Centauri Event Action Programming Please consider that this is not a detailed description of how Centauri event action programming is working. It just wants to give you a little impression of its possibilities. Generally Centauri event action programming just has the intention to combine events like Alarm on or off Connect on or off Framed on or off Overload on or off TTL input high or low with actions. An action can be defined as a set of Centauri commands and will be executed, if an event happened. For detailed description see Communication Reference Manual, Centauri Gateway, chapter 4.18, Event Action Programming. How to input all the necessary Commands to the Centauri You can type in all the necessary commands with help of the Centauri remote control software. Just skip to remote item <Expert/Direct Command>. Maybe you get asked for a Superuser Password. This Superuser Password is determined by the first use of Centauri remote on your PC. If the super user gets lost you can recover it very easily. It is saved in the registry in: HKEY_CURRENT_USER\Software\Mayah Communications\Centauri Remote\SuperUserPassword How to use the direct command dialog: Just type in the Centauri command in the command edit field and confirm by pressing the OK button. You ll get the answer in the answer memo box. Centauri user manual revision level 02/

96 Event Action Programming Example : Event Action Programming In this case the event is an interrupted connection for which a specific action file has been created. This action file includes various commands to, amongst other things, automatically establish a new connection via another communication interface. The following example describes how a new connection via ISDN is built up after the existing IP connection has been interrupted. Creating Action Files Before assigning the action to the event, two action files are to be created. For this the following command is to be used: action_create <action file name> <command1;...;commandn> Creating action file backup: action_create backup event_set connect_off 1 normal true; com_interface isdn; com_waitmsecs 500, com_connect Creating action file normal: action_create normal event_set connect_off 1 backup true; com_interface net The commands specified for these two action files are described in the following chapter. Assigning Action to Event The first command combines the event connect_off (as described in chapter 2) with the action backup. event_set connect_off 1 backup true The action file backup includes different commands (see above): 1. The first line assigns the action file normal to the event connect_off if it occurs the next time. 2. Within the next line, ISDN is selected for new communication interface. 3. This command defines a break of half a second (500 ms). 4. The last command selects the first B-channel for connection, sets the phone number (e.g , the Mayah test line ) and then executes the connection. event_set connect_off 1 normal true com_interface isdn com_waitmsecs 500 com_connect Next the other action file normal is described. This one will be executed if another connect_off event is detected. 1. The first line assigns back the action file backup to the event connect_off. 2. Then the interface is reset to net for establishing an IP-connection if the next connect command is executed. event_set connect_off 1 backup true com_interface net As described in this example, Centauri Event Action Programming provides an easy and individual way of reacting to events and problems that occur. 96 MAYAH Communication GmbH

97 Appendix Point to Multipoint for Centauri 300x, 350x Prerequisites Centauri with system software or later PC with: - min. Pentium 166 MHz - RAM 32 MB - Operating system Windows 95, 98, ME, NT or free serial port (remote control by RS232) or Ethernet card (remote control by IP) Zero modem cable (included in Centauri) if RS232 control is used or all necessary LAN cabling between Centauri and PC Centauri remote control with version Note: You can download the current Centauri system software and the latest remote software from the download section of the Mayah homepage at Point-to-Multipoint The Point-to-Multipoint-mode enables the Centauri 300x and 3500 to receive/send data from/to several different remote Centauri-devices. When processing the data transfer one can choose which input is to be heard (for detailed description see Centauri Communication Reference Manual, chapter ). For handling Point to Multipoint with the Centauri Remote Software, you have to choose <Settings/Others/Multipoint return channel> Centauri Remote Software You can type in all the necessary commands with help of the Centauri remote control software. Just step to remote item <Expert/Direct Command>. You may be asked for a Superuser Password. This Superuser Password is determined by the first use of Centauri remote on your PC. If the Superuser gets lost you can recover it very easily. It is saved in the registry at: HKEY_CURRENT_USER\Software\Mayah Communications\Centauri Remote\SuperUserPassword. How to use the direct command dialog: Just type in the Centauri command in the command edit field and confirm by pressing the OK button. You ll get the answer in the answer memo box. Centauri user manual revision level 02/

98 Point to Multipoint for Centauri 300x, 350x Settings with Direct Command For using the Point to Multipoint, special settings have to be established. Example: 1) Set format to automatic enc_format auto <Setings/Codec/Encoder Imux> 2) Choose the mode that is to be used: enc_mode mono <Settings/Codec/Encoder Mode> 3) Choose the bitrate. enc_bitrate <Settings/Codec/Encoder Bit Rate> There are currently only two different bitrates available : For 1-channel-connection you have to choose bit/sec. For 2-channel-connection you have to choose bit/sec. The remote devices must have the same settings as the multipoint-server. These settings can be made locally on the multipoint server or on the remote devices. In this case the server acts as a slave and synchronizes itself with the remote settings Start The command com_receive [0,1] controls the activity of the multiplexer. The parameter [1] enables the Point-to-Multipoint-mode, whereas [0] disables it. Example: com_receive 1 com_receive 0 enables Point-to-Multipoint disables Point-to-Multipoint Addressing If the Point-to-Multipoint mode is enabled, the same command as above, but with a different parameter, is responsible for addressing the B-channels that are to be used for data-transfer: com_receive[1..n], where n is the max multiplexer-index. This multiplexer-index can be derived from following formula : n = max ISDN B-channels*64000 / Encoderbitrate This means that for 1-channel connections n is the number of B-channels that are available, whereas for 2-channel-connections n is the half of it. For 2-channel-connections the channels of the multipoint server can only be chosen in neughbouring pairs : (1,2), (3,4), (5,6), (7,8) Example: com_receive 2 For the settings made above (bit rate ) this would mean B-channels 3 and 4 are selected for hearing. Generally the addressing of the B-channels only works in one direction. This means the multiplexer can only receive data with all its channels or send data with all its channels. The possibility to receive on one channel while transmitting on another is planned, but not currently available Observation on Frontpanel During Point-to-Multipoint is enabled, the status of each connection can be observed on the frontpanel. For changing from one connection to another, the keypad can be used. Which keypadbutton is to be pressed, depends on the adjusted bitrate. If a bit rate of b/sec is chosen, pressing the buttons 1./ to 8tuv will show the status of the specific connection. With a bit rate of b/sec, this means, two channels are used for each connection, the buttons 1./ to 4ghi will show the specific status. The selected connection is displayed as M1, M2 etc. Note: If a button is pressed, that doesn t represent a connection, the framing-led will be disabled. 98 MAYAH Communication GmbH

99 Appendix HTTP Streaming with Centauri StreamingServer HTTP streaming The Centauri Webserver is able to generate up to 4 different coded audio streams (encoder algorithms) at the same time. The generation of the streams can be executed from any web client/player by running HTML command files stored in the WWW directory of the addressed Centauri HTTP Command Files Structure of a HTML commandfile (see also example files): Syntax: <!--#exec cgi="/streamfile.cgi <Param1> <Param2> <Param3> Parameter: Param1: [SlotNr] Param2: [Algorithm] Param3 [Samplerate] Param4: [Bitrate] Param5: [Mode] <Param4> <Param5>"--> SlotNr defines the encoder slot that should run the requested algorithm. This value is valid from 1 to 4. Please note that only different slots can be streamed at the same time. Algorithm, Samplerate, Bitrate, Mode are to be used as defined in the encoder section of the communication command reference manual. The additional value none for algorithm is to be set for using the actual encoder settings, e.g. <!--#exec cgi="/streamfile.cgi 1 none mono"-->. In this case values for samplerate, bitrate and mode have to be set, but are not relevant. Note: Streaming with different samplerates only works properly if the rates are multiples of the running sample rates. Example: A mix of 32 and 48kHz doesn't work. A mix of 8, 16, and 32kHz or a mix of 8, 16 and 48kHz works fine. Note: The encoder audio type (see Communication Reference Manual, chapter ) has to be set individually for each chain used. Default value is analog Execution of HTTP Command Files Any HTTP request will start an audio stream/encoder with the requested parameter, if no other audio stream/encoder is active on this slot at this time. After the last HTTP request has been done by the web client/player, the audio stream/encoder will be stopped. File extensions of HTML commandfiles are ignored by the StreamingServer. This option supports different web browsers and the use of any extensions to start special players for the selected algorithms which is important for HTML-programming. Example: An HTTP request on STREAM1.mp2, STREAM1.wav or STREAM1.mp3 by a web browser is executed by the Webserver through the HTTP command file STREAM1.htm. Example files: Stream1.htm : <!--#exec cgi="/streamfile.cgi 1 mpegl mono"--> Stream2.htm : <!--#exec cgi="/streamfile.cgi 2 mp3pro mono"--> Stream3.htm : Centauri user manual revision level 02/

100 HTTP Streaming with Centauri StreamingServer <!--#exec cgi="/streamfile.cgi 3 mpegl mono"--> Stream4.htm : <!--#exec cgi="/streamfile.cgi 4 mp3pro mono"--> Note: If the used StreamingServer is connected to another Centauri, this is done automatically via Slot 1, so a simultaneous streaming on this slot will cause transmission failures. In this case use one of the other slots Issues to consider in case of double assignment of a slot When establishing a connection from a Centauri 300x to a StreamingServer, Chain 1 will automatically be used. If this chain is also used for streaming, the following effects can appear: At certain intervals the audio will be pulled off and after a short break it is then streamed faster. This causes a so-called Micky Mouse effect. To prevent this phenomenon the streaming should not be routed over the first slot in this case. 100 MAYAH Communication GmbH

101 Appendix J.52 Connections Prerequisites Centauri with system software or later Note: You can download the current Centauri system software and the latest remote software from the download section of the Mayah homepage at General J.52 : Digital transmission of high-quality sound-programme signals using one, two or three 64 kbit/s channels per mono signal (and up to six per stereo signal) H.221 : Protocol, used by J.52, to exchange information between different devices about supported coding-algorithms and how to share data streams between several ISDN channels. It is an ITU (International Telecommunication Union) standard for guaranteeing compatibility between different manufacturers. Before H.221 the problem with high-quality digital sound transmission was the different setting of the transmitting and the receiving interfaces concerning the Encoder/Decoder algorithm, sample rate and supported maximum bit rate. When the receiving interface worked e. g. with G.722, it refused all incoming data which hadn t been encoded with this particular algorithm. J.52 has been developed to solve this problem by providing a way to synchronize the different interfaces Synchronizing with J.52 While establishing a connection the interfaces exchange information about the algorithms, sample rates and maximum bit rates provided by each. Depending on this information they choose an encoder which is able to be decoded by the receiver. The Centauri executes this process depending on the following parameters, adjustable either via the Centauri Frontpanel Display (Setup / Audio Encoder) or the Centauri Remote Control Software: Front Panel Display Remote Control Command Parameters Type Enc_algo G.722, G.711, Layer 2, Layer 3, MPEG2-AAC, MPEG4-AAC * Dependency Enc_slave Local, remote for detailed description see Centauri Audio Gateway, Communication Reference Manual, chapter 4.3.2, Encoder Algorithm Dependency, enc_slave = local The locally adjusted encoder will be chosen if it is supported by the receiver. If it is not, no encoder will be used. With MPEG algorithms, no bit rate higher than the adjusted one will be used. Dependency, enc_slave = remote The algorithms will be compared and the first that is suitable for both interfaces will be chosen. The order of searching depends on the algorithm. Local algorithm Search order G.722 G.722, MPEG2-AAC, MPEG4-AAC, Layer3, Layer2,G.711* Layer 2 Layer2, Layer3, MPEG2-AAC, MPEG4-AAC, G.722*, G.711* MPEG2-AAC MPEG2-AAC, MPEG4-AAC, Layer3, Layer2, G.722*, G.711* MPEG4-AAC MPEG4-AAC, MPEG2-AAC, Layer3, Layer2, G.722*, G.711* others Layer3, MPEG2-AAC, MPEG4-AAC, Layer2, G.722*, G.711* The algorithms G.711 and G.722 are used if the hardware sample rate allows it (for example it is impossible to use 44,1 khz and 16 khz, since a whole-numbered sample rate proportion between hardware and encoder/decoder is required). The information which will be transmitted to the receiver depends on the settings of the decoder. Dependency, dec_slave = local Just the current algorithm and the adjusted sample rate will be transmitted. Dependency, dec_slave = remote All available algorithms and samplerates will be transmitted. Centauri user manual revision level 02/

102 Dual Mode Dual Mode Prerequisites Centauri with system software or later PC with: - min. Pentium 166 MHz - RAM 32 MB - Operating system Windows 95, 98, ME, NT or Free serial port (remote control by RS232) or Ethernet card (remote control by IP) Zero modem cable (included in Centauri) if RS232 control is used or all necessary LAN cabling between Centauri and PC Centauri remote control with version Note: You can download the current the Centauri system software and the latest remote software from the download section of the Mayah homepage at Dual Mode Using Dual Mode the Centauri 200x and 300x are able to split an S 0 and use different codecs for sending/receiving audio to/from two different remote devices. Thus the number of B-channels belonging to an ISDN interface can be arranged in different ways depending on the requirements of the different audio signals. For example it is possible to assign the B-channels 1 and 2 to the first codec while B-channel 3 to 8 are assigned to the second codec. Running the Dual Mode the Centauri demands a sample rate of 8 to 32 khz in steps of 8. Note: If different sample rates are used for the two codecs, these should be multiples, e.g. 16 and 32 or 8 and 16 khz. Otherwise the audio quality can be reduced Available Algorithms The following algorithms are available for Dual Mode: G.711, G.722, Mpeg Layer 2, Mpeg Layer 3 (only B/s), AAC (only B/s), Standard apt-x, Enhanced apt-x (only fast CPUs) Settings with the Centauri Remote Software For handling the Dual Mode with the Centauri Remote Software, you have to choose <Settings/Others/Dual Mode at B-channel>. The select box which will be then opened, will contain a number of values, depending on the type of ISDN card installed. If the Centauri has e. g. an 4xS 0 ISDN interface, the select box will contain the values 0, 2-8. For executing the example mentioned above, you have to select 3 because the third B-channel is the first one used by the second codec. For disabling the Dual Mode, you have to select 0. Exception: A special problem occurred when one 1xS 0 ISDN interface was installed and the value 2 was chosen for Dualmode at B-channel. While in this constellation, removing the second established connection before the first works without any problems, but removing the first established connection tends to cause an audio drop out on the second one. Solving this problem is only possible if a second 1xS 0 ISDN interface is installed. In this case the second channel of each 1xS 0 ISDN interface is deactivated. So corresponding to the example above, we no longer have channels 1-4 but just channels 1 and 3. Channel 1 belongs to Subcodec 1 and Channel 3 belongs to Subcodec 2. Both subcodecs now have only one ISDN channel each and can carry a bit rate of only 64 kbit/s. With these modifications the different connections now work properly without any failures. 102 MAYAH Communication GmbH

103 Appendix Centauri Remote Software Direct Command You can type in all the necessary commands with help of the Centauri remote control software. Just step to remote item <Expert/Direct Command>. How to use the direct command dialog: Just type in the Centauri command in the command edit field and confirm by pressing the OK button. You ll get the answer in the answer memo box Settings with Direct Command Using the Centauri Remote Software Direct Command, the settings of the Dual Mode are to be configured with the command com_dualmode <B-channel> (see Centauri Audio Gateway Communication Reference Manual, chapter 4.2.3). As described in chapter 3, the valid parameters depend on the type of installed ISDN interface. Example: 1) Enable Dual Mode and use B-channel 3 to 8 by the second codec com_dualmode 3 4) Disable Dual Mode com_dualmode Settings with the Centauri Front Panel Of course it is also possible to adjust the Dual Mode settings via the front panel display of the Centauri. For this you have to choose <Setup/Misc/Dualmode>. Like the select box of the Centauri Remote Software, the display will provide values subject to the installed ISDN interface. These values can be adjusted by pushing the navigation buttons to count them up or down. If Dual Mode is activated the status of the two different subcodecs can be observed by pressing the keypad-button 1./ for the first subcodec and 2abc for the second. The selected subcodec is displayed as S1 or S2. Centauri user manual revision level 02/

104 Multicast Multicast Introduction Multimedia transmission via the internet has become more and more popular in recent years. The audio and video signals are captured, compressed and transmitted to a group of receiving hosts. This generates several problems in organizing the whole procedure. Multicasting could be a way to distribute multimedia data to the receivers, while these may join or leave an audio-cast or a video-cast at any time. The flexibility in joining or leaving a group provided by multicast could make the varying membership much easier to handle. While Unicast stands for a communication pattern that sends data from one host to another and Broadcast represents the transmitting from one host to all others inside a network, the principle of Multicast is to send data from one source host to a varying number of destination hosts, whereas these hosts must have the possibility to request these particular data by transmitting a specific Multicast-address to the next router or prune an existing Multicast connection. The problems with Multicast arise when you think about how data will find the way from sender to receiver. While normal radio or television reach their receivers by spreading data all over the world like a watering can, transmitting through the net has some significant restrictions, like bandwidth and workload. The watering can principle would cause the net to collapse as much as transmitting a data stream via a point-to-point connection for each receiver. Another problem is getting the senders or routers to know which hosts want to receive their data and which don t. The intention of Multicast is to need as little bandwidth as possible in order to keep the workload of the net as small as possible. This means not wasting any bandwidth by sending unnecessary data, but only sending to hosts that request data and sending it via the shortest and/or most efficient way. In general this means that the sender delivers the data only once and it is then duplicated by a router as close to the receiver as possible The process of Multicast The organizing of transmitting and receiving multimedia data is managed by a protocol called IGMP (Internet Group Management Protocol), by which clients can tell a router that they want to join or leave a multicast-group. This multicast-group is a quantity of sender/receiver, registered at their routers for a special Multicast-IP. At IP level there is a specific range of Class D addresses reserved for Multicast. The four significant bits of the class-d addresses are set to The 28-bit number following these four bits is called multicast group ID which ranges from to Each specific Multicast data stream is defined by a Multicast group ID. If a host wants to join a certain Multicast group for transmitting or receiving specific data, it has to inform its immediate neighbour router by sending the specific Multicast ID via an IGMP-telegram. This ID will then be forwarded from router to router for to see if there are other Multicast group members (see Figure 1: Request for Multicast). Figure 1 : Request for Multicast Router Receiver Sender Router Router Router Router Sender Router Router Sender Router Router Router 104 MAYAH Communication GmbH

105 Appendix If the hosts neighbouring router now gets data from the requested Multicast group, it will forward it to the demanding host (see Figure 2: Sending Multicast). Of course the same host is able to act as a sender, too. In this case the neighbouring-router will transmit its data to all the other group members. Figure 2 : Receiving Multicast Receiver Router Receiver Router Router Router Receiver Router Sender Router Router Router Router Router Receiver To leave a Multicast group the host has to prune a Multicast ID, which means that it has to tell its neighbouring router not to forward data of the specific group any more Centauri and Multicast Multicast is available for all Centauri 3000/3001 Audio Gateway, Centauri 3500 Audio Concentrator and Centauri 4001 StreamingServer which support IP-Audio. To act as a Multicast sender the Dependency parameter of the Audio Encoder has to be set to local. To receive Multicast data the dependency has to be remote, so that the Centauri is able to synchronize its settings with the transmitting host. In both cases the broadcast mode has to be disabled. This is to be controlled via frontpanel with Setup->Network->Broadcast or with direct command ip_broadcast? Frontpanel For preparing the encoder for transmitting or receiving Multicast data you have to choose Setup->Audio Encoder->Dependency and set the required parameter. Then choose Connect and set the Multicast address via Direct Dial, Last or Phonebook. Direct Command For setting the parameter with the Centauri Direct Command you have to use the command enc_slave [dependency] Enc_slave local : transmitting Multicast Enc_slave remote: receiving Multicast Then use Com_connect [Multicast address] for connecting. Centauri user manual revision level 02/

106 Multicast Remote Control Using the Centauri Remote Control you have to click Settings->Codec->Encoder follows and set the required parameter (see pict.). Then click Expert->Direct Command and enter the Multicast address. Or click Phonebook and choose the Multicast address. 106 MAYAH Communication GmbH

107 Appendix Centauri ISDN CAPI Trace General concepts of the application interface Common-ISDN-API COMMON ISDN API (CAPI) is an application programming interface standard used to access ISDN equipment connected to basic rate interfaces (BRI) and primary rate interfaces (PRI). For application developers this standard provides a well-defined mechanism for communications over ISDN lines without having to adjust to the particularities of specific hardware vendors implementations. In return, ISDN equipment vendors benefit from a wealth of applications ready to run with their equipment. Having begun in 1989 with manufacturers defining an application interface that would be accepted in the growing ISDN market, CAPI is now a well-established standard. Potential cost savings were the driving force for COMMON ISDN API controller and application development. Commercial users are rapidly migrating to ISDN as the principal medium for exchanging data in a wide range of formats. COMMON ISDN API Version 2.0 reflects more than ten years of ISDN business implementation experience in an exploding market. It incorporates all the benefits of CAPI Version 1.1 as well as all actual aspects of ISDN (such as Group 3 fax connectivity or video-telephony). It is based on Q.931 / ETS , but not limited to these protocols. It simplifies the development of ISDN applications through many default values which do not need to be programmed. It keeps applications free of ISDN protocol knowledge, thus making a great variety of applications possible. COMMON ISDN API provides an abstraction of ISDN services that is independent of the underlying network and of the adapter used to connect to the network. It provides an easy-to-use interface for applications and offers a unified access to different ISDN services such as data, voice, fax, video, telephony, etc Overview COMMON-ISDN-API provides a standardized interface which allows any number of application programs to use any number of ISDN drivers and ISDN controllers. Applications can be freely assigned to specific drivers and controllers: One application can use one controller One application can use more than one controller Several applications can share a single controller Several applications can share more than one controller Applications can use different protocols at different protocol levels; COMMON ISDN API provides a selection mechanism to support this. COMMON ISDN API also performs an abstraction from different protocol variants, creating a standardized network access. All connection-related data such as connection state, display messages etc. is available to applications at any time. COMMON ISDN API covers the entire signaling protocol as well as protocol layers 1 to 3 (physical and framing layer, data link layer and network layer) of the data channels. The interface of COMMON ISDN API is located between Layer 3 and Layer 4, and provides a point of reference for applications and higher level protocols. COMMON ISDN API offers many commonly used protocols to applications without low-level protocol knowledge. The default protocol is ISO 7776 (X.75 SLP), i.e. framing protocol HDLC, data link protocol ISO 7776 (X.75 SLP), and a transparent network layer. Other supported framing layer variants are HDLC inverted, PCM (bit-transparent with byte framing) 64/56 kbit, and V.110 sync / async. COMMON ISDN API integrates the following data link and network layer protocols: LAPD in accordance with Q.921 for X.25 D-channel implementation, PPP (Point-to-Point Protocol), ISO 8208 (X.25 DTE-DTE), X.25 DCE, T.90NL (with T.70NL compatibility) and T.30 (Group 3 fax). Even if not all protocols can be completely fitted into the OSI scheme, COMMON ISDN API always supports three layers. Applications can configure each layer. In case of illegal or meaningless protocol stack combinations (e.g. bit-transparent 56 kbit/s and X.25 DCE), COMMON ISDN API reports an error. Centauri user manual revision level 02/

108 Centauri ISDN CAPI Trace Message Overview This chapter presents the basic mechanism used by COMMON ISDN API, based on message queues for the exchange of commands and data. The term message is a fundamental one in the definition of COMMON ISDN API. Messages are information defined by COMMON-ISDN-API, exchanged between the application and COMMON ISDN API by an asynchronous mechanism. This technique achieves operating system independence. General Message Protocol Communication between the application and COMMON-ISDN-API always uses the following general protocol: A message is always followed by an appropriate reply. Messages going from an application to COMMON ISDN API are called Requests; the corresponding answer from COMMON ISDN API is called a Confirmation. Messages initiated by COMMON ISDN API are called Indications; the corresponding answer from an application is called a Response. This is also reflected in the naming convention for messages: every message name ends with the appropriate suffix (_REQ, _CONF, _IND and _RESP). Each message contains a message number. COMMON ISDN API always returns the number used in the REQUEST message in the corresponding CONFIRMATION. Applications may choose unique message numbers to identify message correlation before interpreting incoming messages. INDICATIONS from COMMON ISDN API are numbered so that an application is guaranteed to get a different message number in every incoming INDICATION. An application is not allowed to send RESPONSE messages without having received an INDICATION. COMMON ISDN API ignores such illegal messages Message Structure All messages exchanged between applications and COMMON ISDN API consist of a fixed-length header and a parameter area of variable length, with one parameter immediately following another. No padding occurs in the message header or parameter area. Figure 1: Message Layout Message Header Parameter 1 Parameter 2... Parameter n In order to facilitate future extensions, messages containing more parameters than defined shall be treated as valid messages. COMMON ISDN API implementations and applications shall ignore all such additional parameters. The message header has the following layout: Figure 2: Message Header Layout Total Length Application ID Command Subcommand Message Nr The message header is composed of the following functional elements: Header element Type Contents Total Length Word Total length of the message including the complete message header. Application ID Word Unique identification number of the application. The application ID is assigned to the application by COMMON ISDN API in the CAPI_REGISTER operation Command Byte Command Subcommand Byte Command extension Message number word Message number as described in 3.1 above 108 MAYAH Communication GmbH

109 Appendix Table of Messages Messages are logically grouped into three kinds: Messages concerning the ISDN signaling protocol (D-channel) Messages concerning logical connections (B or D-channel) Administrative and other messages The following table gives an overview of the defined messages and their functions. Table 1: Messages concerning the signaling protocol Message Value Description CONNECT_REQ 0x02 / 0x80 initiates an outgoing physical connection CONNECT_CONF 0x02 / 0x81 local confirmation of the request CONNECT_IND 0x02 / 0x82 indicates an incoming physical connection CONNECT_RESP 0x02 / 0x83 response to the indication CONNECT_ACTIVE_IND 0x03 / 0x82 indicates the activation of a physical connection CONNECT_ACTIVE_RESP 0x03 / 0x83 response to the indication DISCONNECT_REQ 0x04 / 0x80 initiates clearing down of a physical connection DISCONNECT_CONF 0x04 / 0x81 local confirmation of the request DISCONNECT_IND 0x04 / 0x82 indicates the clearing of a physical connection DISCONNECT_RESP 0x04 / 0x83 response to the indication ALERT_REQ 0x01 / 0x80 initiates sending of ALERT, i.e. compatibility with call ALERT_CONF 0x01 / 0x81 local confirmation of the request INFO_REQ 0x08 / 0x80 initiates sending of signaling information INFO_CONF 0x08 / 0x81 local confirmation of the request INFO_IND 0x08 / 0x82 indicates specified signaling information INFO_RESP 0x08 / 0x83 response to the indication Centauri user manual revision level 02/

110 Centauri ISDN CAPI Trace Table 2: Messages concerning logical connections Message Value Description CONNECT_B3_REQ 0x82 / 0x80 initiates an outgoing logical connection CONNECT_B3_CONF 0x82 / 0x81 local confirmation of the request CONNECT_B3_IND 0x82 / 0x82 indicates an incoming logical connection CONNECT_B3_RESP 0x82 / 0x83 response to the indication CONNECT_B3_ACTIVE_IND 0x83 / 0x82 indicates the activation of a logical connection CONNECT_B3_ACTIVE_RESP 0x83 / 0x83 response to the indication CONNECT_B3_T90_ACTIVE_IND 0x88 / 0x82 indicates switching from T.70NL to T.90NL CONNECT_B3_T90_ACTIVE_RESP 0x88 / 0x83 response to the indication DISCONNECT_B3_REQ 0x84 / 0x80 initiates clearing down of a logical connection DISCONNECT_B3_CONF 0x84 / 0x81 local confirmation of the request DISCONNECT_B3_IND 0x84 / 0x82 indicates the clearing down of a logical connection DISCONNECT_B3_RESP 0x84 / 0x83 response to the indication DATA_B3_REQ 0x86 / 0x80 initiates sending of data over a logical connection DATA_B3_CONF 0x86 / 0x81 local confirmation of the request DATA_B3_IND 0x86 / 0x82 indicates incoming data over a logical connection DATA_B3_RESP 0x86 / 0x83 response to the indication RESET_B3_REQ 0x87 / 0x80 initiates the resetting of a logical connection RESET_B3_CONF 0x87 / 0x81 local confirmation of the request RESET_B3_IND 0x87 / 0x82 indicates the resetting of a logical connection RESET_B3_RESP 0x87 / 0x83 response to the indication Table 3: Administrative and other messages Message Value Description LISTEN_REQ 0x05 / 0x80 activates call and info indications LISTEN_CONF 0x05 / 0x81 local confirmation of the request FACILITY_REQ 0x80 / 0x80 requests additional facilities (e.g. ext. equipment) FACILITY_CONF 0x80 / 0x81 local confirmation of the request FACILITY_IND 0x80 / 0x82 indicates additional facilities (e.g. ext. equipment) FACILITY_RESP 0x80 / 0x83 response to the indication SELECT_B_PROTOCOL_REQ 0x41 / 0x80 selects protocol stack used for a logical connection SELECT_B_PROTOCOL_CONF 0x41 / 0x81 local confirmation of the request MANUFACTURER_REQ 0xFF / 0x80 manufacturer-specific operation MANUFACTURER_CONF 0xFF / 0x81 manufacturer-specific operation MANUFACTURER_IND 0xFF / 0x82 manufacturer-specific operation MANUFACTURER_RESP 0xFF / 0x83 manufacturer-specific operation This has been a short general overview about COMMON-ISDN-API. If you want more detailed information about this theme click The following chapters deal with the Centauri CAPI trace. 110 MAYAH Communication GmbH

111 Appendix Centauri and ISDN CAPI Trace The Centauri uses the COMMON ISDN API for tracing the process of an ISDN connection. The CAPI trace of the Centauri provides a possibility to journalize all messages exchanged between Centauri Software and COMMON ISDN API. It will be enabled if the file isdncapi.run on the d: partition of the Centauri flash card is found at Centauri system start. The tracing is addressed to the files d:\isdncapi.act and d:\isdncapi.prv which can be examined afterwards. NOTE: This option is only for troubleshooting and analyzing. Normal Centauri codec function is restricted in ISDN trace mode Executing ISDN CAPI Trace on Centauri Carry out the following steps to perform the Centauri ISDN CAPI trace: 1) Create an ASCII file called isdncapi.run on your PC 2) FTP copy the file isdncapi.run to the main directory of the d: partition of the Centauri flash card (FTP user: Admin; FTP password: Power) 3) Reboot the Centauri so that the isdncapi.run can be recovered to enable the trace mode 4) Execute the Centauri ISDN connection(s) you wish to trace 5) FTP download the files isdncapi.act and/or isdncapi.prv from the d: partition of the Centauri flash card 6) FTP delete the file isdncapi.run from the d: partition of the Centauri flash card 7) Reboot the Centauri to disable the trace mode 8) Send the files isdncapi.act and/or isdncapi.prv to Mayah Communications for analysis Centauri user manual revision level 02/

112 The New Centauri Keypad The New Centauri Keypad Overview As many of you noticed, the Centauri series has had a new front panel design since the beginning of Besides some new software features that can be adjusted via the front panel, some changes have been made to the key pad and some additional functions made available through the alphanumeric buttons. The most significant reason for developing a new front keypad for the Centauri series was the apparent discrepancy between the menu structure of the Centauri front panel display and the navigation via the keys of the keypad. While moving through the different menu items was mostly vertical, the direction of the arrow keys provided were horizontal. We considered this a bit irritating and developed the new design for a more intuitive way of handling the Centauri functions via the front panel View of the old and the new Centauri Here is a general comparison of the two different front views The front key pad of the old Centauri The front key pad of the new Centauri What has changed All in all there is not so much that has changed. The arrow-up button and the arrow-left button have been swapped as well as the arrow-right and the ENTER-button. This results in a synchronization of arrow direction and navigation direction. If you now want to go down the menu on the front panel, you have to press the arrow down button and not the arrow-right button as before. Respectively, to go up the menu you have to press the arrow-up instead of the arrow-left button. 112 MAYAH Communication GmbH

113 The ENTER-button has been changed to a button with a right-pointing arrow surrounded by a triangular line. The function remains the same. With this button you can choose a menu item or save an entry. Appendix The arrow-up button has changed to a button with a left-pointing arrow represented by a triangular line. With this button you can, as before, go one level higher in the menu structure or delete an entered letter Additional Functions Additional functions are available with the new release via two of the alphanumeric keys. On the *+ - key there is added a dial-symbol which stands for a speed dial function. Instead of having to go through the whole menu structure to establish a connection, it is now possible to do this directly from most parts of the menu. By pressing the -key you will see following items on the front panel: Last(...) Phonebook Connect Disconnect With default Phonebook is marked. After pressing the Right Arrow button (Enter), you can enter a specific phonebook entry number. With the new release these numbers are displayed in parenthesis behind the phonebook entries. You can then establish the connection with Connect. The same fast way of stopping a connection is now possible by pressing the -key, moving to the item Disconnect and press the Right Arrow button (Enter). On the #@ -key, there is added an open-book symbol which represents the phonebook. Pressing this key from most parts of the menu, you will be led directly into the phonebook menu. The functions that were implemented on these keys before are swapped to the keys 1./ and 9wxyz. With 1./ you ll switch at the beginning of a list, while 9wxyz takes you to its end Table of Changes Old Centauri Front Function New Centauri Front Function Move upwards in menu Move upwards in menu Move downwards in menu Move downwards in menu Choose item or save entries Choose item or save entries Go back to a higher menu level or discard entries Go back to a higher menu level or discard entries Switches to the beginning of a list Switches to the end of a list Speed Dial function for providing a fast way of connecting or disconnecting Speed Dial function for providing a fast way of making the phonebook entries available Switches to the beginning of a list Switches to the end of a list Centauri user manual revision level 02/

114 Centauri Streaming Server w. Different Media Players Centauri Streaming Server w. Different Media Players Streaming With the Centauri Streaming Server MAYAH aims to provide a new audio web server concept that minimizes administration costs while maximizing the number of listeners that can be reached simultaneously simply connect the audio, set the IP address and stream ahead. The Centauri Streaming Server is able to generate up to 4 different-coded audio streams (encoder algorithms) at the same time. The generation of the streams can be executed from any web client/player by running HTML-command files stored in the WWW directory of the addressed Centauri. These HTML-command files contain information about slot number, algorithm, sample rate, bit rate and mode of the audio stream. For detailed information see Application Note 6, Webserver HTTP Streaming. In this Application Note, Windows Media Player, Real Player and Winamp exemplify how to use the Centauri Streaming Server with different Media Players Windows Media Player For receiving an audio stream from a Centauri 4001 Streaming Server with the Windows Media Player you just have to go to the File menu. Then click on the menu item Open and the Open-dialog will be visible. Now you have the possibility to enter a URL with the name or IP-address of the Centauri Streaming Server and the stream file you want to receive. Examples: This causes a search on the D-partition of the Centauri for the specified stream file which will then be streamed to the requesting Windows Media Player. 114 MAYAH Communication GmbH

115 Appendix Real Player Using Real Player, the procedure to receive a stream from a Centauri Streaming Server is almost the same. Click on the File menu item to open the popup menu and then click on Open Location. A dialog opens in which it is possible to enter a URL with the specific Centauri address and stream file Winamp The design of the Winamp application differs from that of the other programs. So the steps needed to get a connection to a Centauri Streaming Server differ a bit, too. To open the popup menu here, you have to click on the right mouse button while the mouse pointer is located above the Winamp-window. There will be different popup menus depending on the position of the mouse. You will get the desired popup menu if the mouse pointer is positioned at the top or bottom area, or on the equalizer area. If you now place the mouse above the menu item Play, another popup menu is activated. Choose Location and, just as with the other Media Players, a dialog will open. Here you can enter the URL of the required stream as described above, and you will be connected to the Centauri 4001 Streaming Server. Centauri user manual revision level 02/

116 Centauri Streaming Server w. Different Media Players Audio Quality MP3 currently defines the most common algorithm for audio coding, so Windows Media Player and Real Player can only decode mp3-streams. On the other hand, Winamp has the additional ability to decode mp3pro, which features only half the bit rate of mp3 at the same audio quality. For this it is necessary to install so-called plug-ins. Click the right mouse button, when it is positioned on the same areas as described above, place the mouse on the menu item Options and click on Preferences when the next popup menu is opened. Now you ll get a window which shows a list containing the available input plug-ins which can be configured by selecting and pressing the Configure button. To configure mp3pro, select THOMSON mp3pro Decoder. 116 MAYAH Communication GmbH

117 Appendix Centauri StreamingServer with Multicast Multicast Multicast defines a way of delivering streams via the internet that lies between Unicast and Broadcast. While Unicast stands for a communication pattern that sends data from one host to another and Broadcast represents the sending from one host to all others inside a network, the principle of Multicast is to send data from one source host to a varying number of destination hosts, whereas these hosts must have the possibility to request these particular data by transmitting a specific Multicast address to the next router or prune an existing Multicast connection (for detailed information see Application Note 9, Multicast). The intention of Multicast is to need as little bandwidth as possible for to keep the workload of the net as small as possible. This means not wasting any bandwidth by transmitting unnecessary data, but just send to hosts which request data and to send it via the shortest and/or most efficient way. In general this means that the sender delivers the data just once and it is duplicated by a router as near to the receiver as possible. Multicast is available for all Centauri 3000/3001 Audio Gateway, Centauri 3500 Audio Concentrator and Centauri 4001 Streaming Servers that support IP-Audio Multicast with the Centauri StreamingServer Stream 1 Stream 2 Stream 3 Stream 4 The Centauri Streaming Server is able to generate up to 4 different-coded audio streams (encoder algorithms) at the same time. The generation of the streams can be executed from any web client/player by running HTML-command files stored in the WWW directory of the addressed Centauri (see Application Note 12, Streaming server and media player), or by connecting the client with a special Multicast-address which defines a specific stream Multicast with HTTP-Streaming Generating HTTP-command files A HTTP-command-file can be created with any text editor. It must have the following structure: <!--#exec cgi="/streamfile.cgi <Param1> <Param2> <Param3> Parameter: Param1: [SlotNr] Param2: [Algorithm] Param3 [Samplerate] Param4: [Bitrate] Param5: [Mode] <Param4> <Param5>"--> SlotNr defines the encoder slot that should run the requested algorithm. This value is valid from 1 to 4. Please note that only different slots can be streamed at the same time. Algorithm, Samplerate, Bitrate, Mode are to be used as defined in the encoder section of the communication command reference manual. Note: Streaming with different sample rates only works properly if the rates are multiples of the sample rates currently running. Example: A mix of 32 and 48kHz doesn't work. A mix of 8, 16, and 32kHz or a mix of 8, 16 and 48kHz works fine. After creating such a file, it has to be stored on the D:-partition of the Centauri with the extension.htm, so that it is available through the net. Centauri user manual revision level 02/

118 Centauri StreamingServer with Multicast Executing HTTP-command files The execution of the command file can be activated by any web client or media player which is part of the net. The structure has to be as followed: or name]/[command file-name. extension] whereas the extension is irrelevant Example: http//centauri-address or name/ activates a search in the www-folder of the addressed Centauri. Only the name of the command file is significant for searching. The extension just defines in which way the data should be interpreted. This option makes it possible to execute different formats from any web browser which is important for HTML programming Multicast with Multicast-addressing Another way of using Multicast with the Centauri, not yet implemented for four aggregates but for one, is to join or leave a Multicast-group by transmitting a Multicast-address. These addresses must belong to a number of special IP addresses reserved for this purpose. The range of Multicast addresses is from to So addressing the four Centauri aggregates could look like the following example: Aggregate Aggregate Aggregate Aggregate 4 Depending on whether the Centauri should act as a transmitter or a receiver for Multicast, it is necessary to make some special settings. To act as a Multicast sender the Dependency parameter of the audio encoder has to be set to local. To receive Multicast data the dependency of the encoder has to be remote, so that the Centauri is able to synchronize its settings with the transmitting host. Note that the Centauri broadcast mode has to be deactivated for correct service. This is to be controlled via front panel with Setup->Network->Broadcast or with direct command ip_broadcast? There are three different ways to make these settings and establish a connection. Frontpanel For preparing the encoder/decoder for transmitting or receiving Multicast data you have to choose Setup->Audio Encoder->Dependency and set the required parameter. Then choose Connect and set the Multicast address via Direct Dial, Last or Phonebook. Direct Command For setting the parameter with the Centauri Direct Command you have to use the command enc_slave [dependency] Enc_slave local : transmitting Multicast Enc_slave remote : receiving Multicast Then use Com_connect [Multicast address] for connecting. 118 MAYAH Communication GmbH

119 Appendix Remote Control Using the Centauri Remote Control you have to click Settings->Codec->Encoder follows and set the required parameter (see pict.). Then click Expert->Direct Command and enter the Multicast address. Or click Phonebook and choose the Multicast address Multicast with IP-addressing Also planned for implementation is a third way to use Centauri for Multicast. In this case, instead of using specific Multicast-addresses, normal IP-addresses are used for a Centauri to join a Multicast group. For this the parameter Interface has to be set to Network. As in chapter 4, the broadcast mode has to be deactivated again. Front panel For setting the Interface to Network, choose Setup->Network->Communication Interface->Net Then choose Connect and set the IP address/stream file.[htm;mp3;...] via Direct Dial, Last or Phonebook. The addressed Centauri StreamingServer will then send the required stream. Direct Command For setting the parameter with the Centauri Direct Command you have to use the command com_interface net Then use com_connect [IP address/stream file.[htm;mp3;...]] for connecting. Remote Control Using the Centauri Remote Control you have to click Connect and choose IP (see pict.). Then insert the IP address and the streamfile you want to execute. Centauri user manual revision level 02/