Installation and Operation Manual DT3. T3 Multiplexer Module DXC-100 MODULE

Transcription

1 Installation and Operation Manual DT3 T3 Multiplexer Module DXC-100 MODULE

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3 DT3 T3 Multiplexer Module Installation and Operation Manual Notice This manual contains information that is proprietary to RAD Data Communications Ltd. ("RAD"). No part of this publication may be reproduced in any form whatsoever without prior written approval by RAD Data Communications. Right, title and interest, all information, copyrights, patents, know-how, trade secrets and other intellectual property or other proprietary rights relating to this manual and to the DT3 and any software components contained therein are proprietary products of RAD protected under international copyright law and shall be and remain solely with RAD. DT3 is a registered trademark of RAD. No right, license, or interest to such trademark is granted hereunder, and you agree that no such right, license, or interest shall be asserted by you with respect to such trademark. You shall not copy, reverse compile or reverse assemble all or any portion of the Manual or the DT3. You are prohibited from, and shall not, directly or indirectly, develop, market, distribute, license, or sell any product that supports substantially similar functionality as the DT3, based on or derived in any way from the DT3. Your undertaking in this paragraph shall survive the termination of this Agreement. This Agreement is effective upon your opening of the DT3 package and shall continue until terminated. RAD may terminate this Agreement upon the breach by you of any term hereof. Upon such termination by RAD, you agree to return to RAD the DT3 and all copies and portions thereof. For further information contact RAD at the address below or contact your local distributor. International Headquarters RAD Data Communications Ltd. 24 Raoul Wallenberg St. Tel Aviv Israel Tel: Fax: market@rad.com U.S. Headquarters RAD Data Communications Inc. 900 Corporate Drive Mahwah, NJ USA Tel: (201) , Toll free: Fax: (201) market@radusa.com RAD Data Communications Ltd. Publication No /04

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5 Contents Chapter 1. Introduction 1.1 Overview Purpose Main Features Software Updates Physical Description DT3 Module Set, General Application Module Interface Modules Technical Specifications Chapter 2. Module Installation and Operation 2.1 General DT3 Installation Application Module Installation Interface Module Installation Connecting Cables Chapter 3. Configuration Instructions 3.1 Introduction Configure a Slot for the DT3 Module Change a Module Set DT3 Module Configuration DS3 Port Configuration DS2/G.747 Group Type Configuration T1/E1 Link Configuration Accessing the DT3 Main Menu View Configuration Menu View HDS3 Port Configuration View DS2/G.747 Group Type Configuration View T1/E1 Link Configuration N+1 Redundancy Menu N+1 Redundancy Status Menu Chapter 4. Alarms & Diagnostics 4.1 Diagnostics Menu Diagnostics Center (Diagnostics Manager) Diagnostic Test Options BERT (Bit Error Rate Test) Expose (Link Status) G.826 Statistics Re-initialize T1/E1 Framer Error Insertion Clear Counters Diagnostic Loops DT3 Installation and Operation Manual i

6 Table of Contents ESF Statistics Minute Performance Registers In-Service Links Line Interface Unit (LIU) Monitor Monitor Control Signals (PCM Signalling Display Menu) Utilities Menu Cold Reset Device Warm Reset Device Board Status About Display ii DT3 Installation and Operation Manual

7 Table of Contents List of Figures 1-1. DS3 Signal Structure DT3 Application Module Panel DT3 Interface Module Panel Node Configuration Menu Slot Configuration Menu Slot Configuration Submenu Select a Card Type Menu DT3 Configuration Menu DS3 Port Configuration Menu DS2/G.747 Group Type Configuration Menu T1/E1 Link Configuration Menu Link Configuration Menu Nest Summary Menu DT3 Main Menu DT3 Module View Configuration Menu View DS3 Port Configuration Menu View DS2/G.747 Group Type Configuration Menu View T1/E1 Link Configuration Menu View Individual T1/E1 Link Configuration Menu N+1 Redundancy Menu N+1 Redundancy Status Menu Diagnostics Menu Diagnostics Manager Menu LIU BERT Menu Link BERT Selection Menu Start New Test Prompt T1/E1 Link Status Menu DS3 Framer Status Display G.826 Statistics Display Re-initialize Framer Screen T1/E1 Link Status Menu - Error Insertion Choices Error Insertion Prompt (Typical) DS3 Status Display - Error Insertion Choices Error Insertion Prompt (Typical) Loop Selection Screen Process Loop Prompt DT3 Module Loops User Defined Loop Select Screen DS3 Framer/LIU Loop Selection Screen ESF Statistics Display Minute Performance Registers Display Diagnostics Manager Menu (In-Service Links) Line Interface Unit Monitor Display PCM Signalling Display Menu PCM Signalling Display Menu DT3 Installation and Operation Manual iii

8 Table of Contents Utilities Menu Cold Reset Device Prompt Warm Reset Device Prompt Board Status Screen (IS to OOS) Board Status Screen (OOS to IS) About Module Display List of Tables 1-1. Mixed T1/E1 Configurations DT3 Module Indicators DS3 Port Configuration Field Descriptions DS2/G.747 Group Type Configuration Field Descriptions Individual Link Configuration Menu Field Descriptions N+1 Redundancy Status Menu Field Descriptions DT3 Diagnostics Menu Option Table Diagnostics Manager Field Descriptions Diagnostic Test Options BERT Selections T1/E1 Link Status Menu Field Descriptions DS3 Framer Status Display Field Descriptions G.826 Statistics Field Descriptions T1/E1 Link Error Insertion Selections DS3 Framer Error Insertion Selections Loop Selection Screen Options User-Defined Loop Field Descriptions DS3 Framer/LIU Loopback Selections ESF Statistics Display Field Descriptions Minute Performance Registers Display Field Descriptions Line Interface Unit Monitor Display Field Descriptions PCM Signalling Display Menu Field Descriptions Utilities Menu Option Table About DT3 Module Display Field Descriptions iv DT3 Installation and Operation Manual

9 Chapter 1 Introduction 1.1 Overview Purpose Note This manual describes the technical characteristics, application, installation and operation of the DT3 used in the DXC-100 Multiservice Access Node. The DT3 is a single-port T3 interface module that multiplexes any timeslot from up to 28 T1 links or 21 E1 links into a single T3 stream, with either C-bit parity or M13 framing. Mixed (E1 and T1) traffic applications are also supported, as per ITU-T Rec. G.747. The module has an integral BERT and supports loopback diagnostics. 6:1 hardware redundancy is available via the DXC-100PSX unit. The DT3 module set allows the DXC-100 to connect to a DS3 compatible link, and is capable of multiplexing up to 28 T1 links or 21 E1 links into a single DS3 signal. : A maximum of six DT3 module sets may be installed in a DXC-100, based upon mapping up to 28 links per card for a total of 168 DS1s (126 E1s) with all 24 (32) DS0s mapped on each DS1 (E1). In fact, more than six module sets may be installed, although not all associated DS0s can be mapped due to insufficient backplane bandwidth. Main Features The primary function of the DT3 module is to transmit and terminate a DS3 line containing T1 or E1 channels. These channels are mapped to the DS3 line in accordance with ITU-T Rec. G.747, which allows both T1 and E1 channels to be transferred over a single DS3 pipeline: A DS3 channel is subdivided into 7 DS2 groups. Each DS2 group, using a bandwidth of Mbps, can be configured for T1 or E1 links. Up to 28 links can be assigned into 7 groups of either 4 DS1 or 3 E1 links per group. A group will always consist of links of the same type. When configured for E1, the fourth link within a group is not available. Figure 1-1 shows the structure of the DS3 signal. The DS Mbps is composed of payload and overhead for alignment, performance monitoring, and alarms. Overview 1-1

10 Chapter 1 Introduction DT3 Installation and Operation Manual DS-1 DS-1 DS-1 DS-1 M Mbps M Mbps x 4 = Mbps E1 E1 E1 M Mbps DS Mbps Mbps x = Mbps M Mbps x 7 = Mbps Figure 1-1. DS3 Signal Structure Since T1 and E1 can coexist on the same DS3, Table 1-1 shows the possible configurations for mixing T1 and E1 links. The eight possible configurations of T1 and E1 links can provide a level of flexibility for many service providers. Table 1-1. Mixed T1/E1 Configurations Number of T1s Number of E1s Software Updates The DT3 module has extensive statistic gathering capability. Each of the T1/E1 framers can report sync status, frame errors, CRC errors, frame slips, and several link alarm conditions. The DS3 framer can report sync status, line errors, code violations, C-bit parity, and link alarm conditions. In addition, the FDL and C-bit maintenance link protocols can accumulate statistics for their respective protocols. For software update procedures, refer to the Utilities chapter of the DXC-100 Installation and Operation Manual. 1-2 Overview

11 DT3 Installation and Operation Manual Chapter 1 Introduction DT3 Module Set, General 1.2 Physical Description The DT3 module set is designed to occupy a single backplane slot in the DXC-100 chassis. The DT3 application/interface module set comprises two circuit card modules: an application module and an interface module. The application module (front card) contains the backplane, switching, and framing logic. The interface module (rear card) provides the link electrical interface via two BNC connectors. DT3 R X DT3 T3 T X STATUS TEST PAYLOAD STATUS TEST READY Figure 1-2. DT3 Application Module Panel Figure 1-3. DT3 Interface Module Panel Thumbscrews are provided at the top and bottom of the panels to secure the modules in the chassis and to make an electrical connection to frame ground for regulatory emission compliance. The electrical connection to frame ground also protects the modules from static discharge. Physical Description 1-3

12 Chapter 1 Introduction DT3 Installation and Operation Manual Application Module Front Panel DT3 occupies one application module slot in the DXC-100 chassis. The panel of the DT3 module is shown in Figure 1-2. Table 1-2 explains the functions of the indicators located on the module panel. Indicator State Description Table 1-2. DT3 Module Indicators STATUS (Framer/LIU Port) TEST (Framer/LIU) STATUS (Payload) TEST (Payload) READY Green Red Flashing Red Yellow Framer/LIU port is operational and functioning properly. The DS3 line is free of Framing Errors, and there are no Alarms. The DS3 line is in an Alarm state which may include receive loss of signal and/or framing errors. This may be due to one of the following: invalid configuration; link has failed; cable is bad or not connected; rear interface is malfunctioning. DS3 line is in an error or alarm condition. Framer/LIU is in a loopback condition, or LIU BERT is enabled. Flashing Yellow An error has been detected in LIU BERT. OFF Green Red Yellow No testing is being conducted. The payload envelope is free of framing errors and all in-service T1/E1 links are operational and functioning properly. A Payload Alarm condition exists, such as Loss of Pointer, AIS, RDI, etc. One of more of the T1/E1 links is in a loopback condition or link BERT is enabled. Flashing Yellow An error has been detected during T1/E1 link BERT. OFF Green No testing is being conducted. Module is fully operational and in an online state. Flashing Green Module is fully operational, and in a standby state (when N+1 redundancy has been implemented). Red Flashing Red OFF Module is in a system bus error state. Module is in offline (fault) state Module is not powered up. Other LED Indications If all front panel LEDs are cascading from top to bottom, the module is downloading software to memory. Caution Do not interrupt the software upgrade while it is in progress, otherwise the DT3 module configuration may be damaged. In the event of damage, please contact RAD Technical Support Department. 1-4 Physical Description

13 DT3 Installation and Operation Manual Chapter 1 Introduction If all front panel LEDs are off except the READY LED, it indicates that all links are Out of Service. If all LEDs are flashing, it indicates that the rear interface module is missing or the device is being forced Out of Service. Interface Modules The interface connector of the DT3 module is located on its interface module, which plugs into a separate compartment at the rear of the DXC-100 chassis. Figure 1-3 shows the panel of the DT3 interface module. The interface module has two BNC connectors designated TX and RX. Physical Description 1-5

14 Chapter 1 Introduction DT3 Installation and Operation Manual 1.3 Technical Specifications Payload Ports Number of Payload Ports See Table 1-1 Framing Nominal Data Rate C-bit Parity or M13 in accordance with ITU-T Rec. G Mbps Jitter Performance ITU-T Rec. G.823 Pulse Shape ITU-T Rec. G.703 Connectors Pair of BNC female connectors Timing Internal clock (Stratum 3) Station clock Receive clock (from any link or from any internal T1 or E1 link of T3 interface) General Indicators READY (green/red): indicates the status of the module set in general Diagnostics Redundancy Capability Power Consumption 10.5W Physical Front Main Module STATUS (red/green): indicates link status separately for the T3 line and the payload port TEST (yellow) indicates test status separately for the T3 line and the payload port T3 local/remote loopbacks Local loopbacks on each payload port T3 performance monitoring: complies with ITU-T Rec. G. 826 Up to 6:1 ratio with DXC-100PSX N+1 Protection Switch Height: 263 mm (10.3 in) Width: 25 mm (9.8 in) Depth: 213 mm (83.8 in) Rear Interface Module Height: 263 mm (10.3 in) Width: 25 mm (9.8 in) Depth: 127 mm (50.0 in) 1-6 Technical Specifications

15 Chapter 2 Module Installation and Operation 2.1 General This Chapter provides installation, configuration and operation instructions for the DT3 module. The information presented in this chapter supplements the DXC-100 installation, configuration and operation instructions contained in the DXC-100 Installation and Operation Manual. Warning Before performing any internal settings, adjustment, maintenance, or repairs, first disconnect all the cables from the module, and then remove the module from the DXC-100 chassis. No internal settings, adjustment, maintenance, and repairs may be performed by either the operator or the user; such activities may be performed only by a skilled technician who is aware of the hazards involved. Always observe standard safety precautions during installation, operation, and maintenance of this product. Caution The DT3 module contains components sensitive to electrostatic discharge (ESD). To prevent ESD damage, always hold the module by its sides, and do not touch the module components or connectors. General 2-1

16 Chapter 2 Module Installation and Operation DT3 Installation and Operation Manual 2.2 DT3 Installation Physically insert the DT3 application and interface modules (front and rear cards) into the DXC-100 unit. Note In order to utilize N+1 redundancy, a DT3 module must be installed in slots 8 to 10, with a redundant module installed in slot 11 (for Broadband Group 1) or installed in slots 1 to 6, with a redundant module in slot 7 (for Broadband Group 2). The DT3 module components are extremely sensitive to electrostatic discharge. When handling this module, wear an anti-static wrist strap connected to frame ESD ground to prevent damage to circuits from electrostatic discharge. Caution Application Module Installation 1. Hold the application module vertically (component side left). 2. Slide the application module into a slot in the front of the DXC-100 chassis following the white card guides. 3. Open both card ejectors until they are at a 90-degree angle to the module, then slide the module further into the slot until the hook on the card ejectors is inside the lip of the DXC-100 chassis. 4. Slowly close the card ejectors, which will seat the application module in the slot. 5. Tighten the thumbscrews at the top and bottom of the application module. Interface Module Installation 1. Hold the interface module vertically (component side right). 2. Slide the interface module into a slot in the rear of the DXC-100 chassis following the white card guides. 3. Seat the interface module by slowly pressing it into place. 4. Tighten the thumbscrews at the top and bottom of the interface module. 2.3 Connecting Cables On the rear interface module, connect the outgoing (Transmit) cable to the TX (top) BNC connector and the incoming (Receive) cable to the RX (bottom) BNC connector. 2-2 Connecting Cables

17 Chapter 3 Configuration Instructions 3.1 Introduction This Chapter provides specific configuration information for DT3 modules. The configuration activities are performed by means of the management system used to control the DXC-100. Note All the menus in this manual identify the DT3 module as HDS3. This Chapter covers only the configuration activities specific to DT3 modules: for general instructions and additional configuration procedures, refer to the DXC-100 Installation and Operation Manual. 3.2 Configure a Slot for the DT3 Module Note In order to view the menus associated with the DT3 module set, a slot must be configured for the DT3 module set, and a DT3 application module must be resident in the corresponding front slot in the DXC-100 equipment nest. A DT3 interface module must also be resident in the corresponding rear slot in the nest. If the slot does not show a Configured Type in the Slot Summary Menu, refer to the text below for information on how to configure a slot. The following procedure describes how to assign and configure a slot for the DT3 module set. 1. From the DXC-100 Main Menu, scroll down to the System Configuration field and press <Enter>. The following menu appears: Configure a Slot for the DT3 Module 3-1

18 Chapter 3 Configuration Instructions DT3 Installation and Operation Manual Node Configuration Menu Slot Configuration Nest Profile System Clock Source Menu Users Menu Port IP Addresses SNMP Agent Configuration Date and Time TACACS Plus Figure 3-1. Node Configuration Menu 2. Place your cursor on the Slot Configuration field and press <Enter>. The following menu appears, displaying slots numbered from 1 to 11. Nest #1 Slot Configuration Menu Slot# Device Type Name Redundancy Octal T1/E1 Disable 2 Octal T1/E1 Disable 3 Octal T1/E1 Disable 4 Octal High Speed Disable 5 Octal High Speed Disable 6 Disable 7 HDS-3 Disable 8 HDS-3 Enable 9 HDS-3 Disable 10 HDS-3 Disable 11 HDS-3 Enable N+1 Redundancy: Enable N+1 Redundancy Switchover: Automatic N+1 Redundancy Restore: Manual Change Card = [Enter key] [D]elete Card [P]ort/Link Cfg Figure 3-2. Slot Configuration Menu 3-2 Configure a Slot for the DT3 Module

19 DT3 Installation and Operation Manual Chapter 3 Configuration Instructions 3. Move your cursor to the slot number where the DT3 module will reside, and press <Enter>. The following menu appears: Slot Configuration Nest: 1 Slot: 8 Slot Name: Card Type: Redundancy: Disable Figure 3-3. Slot Configuration Submenu 4. Place your cursor on the Slot Name field and press <Enter>. Type in a slot name or number of up to 11 alphanumeric characters and press <Enter> again. 5. Select a card type. Move your cursor to the Card type field and press <Enter>. The Card Type Menu appears: Select a Card Type 1) XCC 2) XLC 3) XLCOT1E1 4) STM1 5) STM1X 6) OC3 7) OC3X 8) STS1 9) HDS3 10) DS3 11) E3 12) OT1E1 13) QT1 14) OHSD 15) QHSD 16) DS0-DP 17) OCU-DP 18) TAM 19) ROUTER 20) OCTAL VOICE Enter Card Type Number: 0 Figure 3-4. Select a Card Type Menu Configure a Slot for the DT3 Module 3-3

20 Chapter 3 Configuration Instructions DT3 Installation and Operation Manual Note 6. Press <Enter>, type in the number of the DT3 module (9), then press <Enter> again to store the device type. 7. Press X to save module type and return to the Slot Configuration Submenu. 8. For DXC-100 units with the N+1 Protection Switch, move your cursor to the Redundancy field to Enable or Disable redundancy as desired. The Redundancy field will only be displayed if Broadband Redundancy has been Enabled and set to HDS-3 (DT3) via the Nest Profile Menu. In order to utilize N+1 redundancy, a DT3 module must be installed in slots 8 to 10, with a redundant module installed in slot 11 (for Broadband Group 1) or installed in slots 1 to 6, with a redundant module in slot 7 (for Broadband Group 2). Change a Module Set Note 9. Press X to save changes. When prompted: Update Configuration? Are you sure (Y/N)? Press Y. You are returned to the Slot Configuration menu. 1. Physically remove the module set from the DXC-100 unit in accordance with Chapter Move your cursor to the slot where the module set resided, and press D. A message appears stating, All existing connections for this slot will be deleted. Press Y to confirm the action or N to cancel. If you do not remove the module set prior to pressing D, the following message appears: -ALERT!- Can not delete a device that is present. Note 3. Physically insert the new module set into the DXC-100 unit. 4. Configure the slot for the new module set. Follow the steps in the previous procedure. A module set may also be changed without deleting the old module set by skipping step 2 of this procedure. 3-4 Configure a Slot for the DT3 Module

21 DT3 Installation and Operation Manual Chapter 3 Configuration Instructions 3.3 DT3 Module Configuration This section will guide you through configuring the DS3 Port, configuring the DS2/G.747 Group Type, and configuring the T1/E1 links for a DT3 module. Note A module does not have to be physically present to be configured, but the slot must be configured for that type of module. Navigation: Standalone DXC-100 Main Menu System Configuration Slot Configuration Select Slot with DT3 Module [P]ort/Link Cfg OR DXC-100 Stack Main Menu System Configuration Nests Profile Select Nest with DT3 Module [S]lot Conf. Select Slot with DT3 Module [P]ort/Link Cfg Nest #1 Slot #8 HDS-3 Configuration Menu HDS3 Port Configuration DS2/G.747 Group Type Configuration T1/E1 Link Configuration Figure 3-5. DT3 Configuration Menu The Configuration Menu has three options: Select DS3 Port Configuration to configure the DS3 port. Select DS2/G.747 Group Type Configuration to configure the groups. Select T1/E1 Link Configuration to configure the T1 and E1 links. DT3 Module Configuration 3-5

22 Chapter 3 Configuration Instructions DT3 Installation and Operation Manual DS3 Port Configuration The DS3 Port Configuration Menu is used to enter identification information and set options for the DS3 port. 1. From the Configuration Menu, place your cursor on the HDS3 Port Configuration field and press <Enter>. The following menu appears: Nest #1 Slot #8 HDS3 Port Configuration M13 Operating Mode...: Bellcore M13 Rcv Loop Timing...: Disabled Short Cable < 50'...: Yes M13 Loopback Request Code...: 3rd C-Bit Inverted FEAC Loopback Request...: Disabled Xmit AIS when DS3 in local loop..: None Transmit DS3 AIS...: None Rx DS3 AIS detection selection...: Unframed all ones pattern Figure 3-6. DS3 Port Configuration Menu 2. Move the cursor to the field that you want to configure and press <Enter>. Refer to the field descriptions in Table 3-1 to assist you in setting up the DS3 multiplexing parameters. 3. Once the fields have been configured, press X to save changes. When prompted: Update Configuration? Are you sure (Y/N)? Press Y. Table 3-1. DS3 Port Configuration Field Descriptions Field Description M13 Operating Mode: (option field) Rcv Loop Timing (Receive Loop Timing): (option field) Short Cable < 50 : (option field) The framing selection for the DS3 to DS3 multiplexing. This can be either C-Bit Parity or Bellcore M13. This setting is provided by the carrier. Controls the DS3 transmit timing. When Enabled, transmit timing is provided by a DS3 receive clock. When Disabled, DS3 transmit timing is provided by a free running on board oscillator. Refer to the DXC-100 Installation and Operation Manual for more details on transmit timing. Controls the line build out of the DS3 transmitter. Set to Yes when attached cable is less than 50 feet long. 3-6 DT3 Module Configuration

23 DT3 Installation and Operation Manual Chapter 3 Configuration Instructions Table 3-1. DS3 Port Configuration Field Descriptions (Cont.) Field M13 Remote Loopback Request Code: (option field) FEAC Loopback Request: (option field) Xmit AIS when DS3 in local loop: (option field) Transmit DS3 AIS: (option field) Rx DS3 AIS detection selection: (option field) Description Controls line codes used to set and reset DS3 remote line loopback requests. This setting is provided by the carrier. These codes cause a DS3 loopback in remote DS3 equipment or respond to codes from remote DS3 equipment. This applies to Bellcore M13 mode only. C-Bit parity has a mechanism defined by specification. Different manufacturers use different patterns in M13 mode. The option list supports a variety of codes including: 3rd C-Bit Inverted 2nd C-Bit Inverted 1st C-Bit Inverted Select Enabled to allow the module to respond to a Far End Alarm and Control loopback request. A DS3 AIS may be generated in one of four ways. This setting is used to select the DS3 AIS generation mechanism. AIS options provided by the carrier include: Framed 1010 pattern & C-Bit set to 0 Framed 1111 pattern & C-Bit set to 0 Unframed all ones pattern None A DS3 AIS may be generated in one of four ways. This setting is used to select the DS3 AIS generation mechanism. AIS options provided by the carrier include: Framed 1010 pattern & C-Bit set to 0 Framed 1111 pattern & C-Bit set to 0 Unframed all ones pattern None. A DS3 AIS may be detected in one of five ways. This setting is used to select the DS3 AIS mechanism that is used for providing an R3AIS alarm. Alarm options provided by the carrier include: Unframed all ones pattern Framed 1010, overhead bits disregarded C-bits=0, payload bits disregarded Framed 1010, C-Bits=0 Framed 1111, overhead bits disregarded. DT3 Module Configuration 3-7

24 Chapter 3 Configuration Instructions DT3 Installation and Operation Manual DS2/G.747 Group Type Configuration Up to 28 links can be assigned into 7 groups of either 4 DS1 or 3 E1 links per group. A group will always consist of links of the same type. When configured for E1, the fourth link within a group is not available. 1. From the Configuration Menu, place your cursor on the DS2/G.747 Group Type Configuration field and press <Enter>. The following menu appears: Nest #1 Slot #8 HDS3 Framer DS2/G.747 Group Type Configuration Group# Type : DS1 2: DS1 3: E1 4: DS1 5: DS1 6: DS1 7: DS1 Figure 3-7. DS2/G.747 Group Type Configuration Menu Note 2. For each group number, the type can be defined by moving your cursor to the applicable group number and pressing <Enter> to select either DS1 or E1. A group will always consist of 4 links, even if the fourth has been disabled (E1). For example, Group #1 consists of links 1 to 4, Group #2 consists of links 5 to 8, etc. 3. Once the group types have been defined, press X to save changes. When prompted: Update Configuration? Are you sure (Y/N)? Press Y. You are then returned to the Configuration Menu. Field descriptions for this menu are provided in Table 3-2. Table 3-2. DS2/G.747 Group Type Configuration Field Descriptions Field Group#: (display field) Type: (display field) Description This field displays the DS2 Group Number (1 to 7) of the group that you are configuring. This field is used to select either DS1 or E1 as the type of links contained within the group. 3-8 DT3 Module Configuration

25 DT3 Installation and Operation Manual Chapter 3 Configuration Instructions T1/E1 Link Configuration 1. From the DS3 Configuration Menu, place your cursor on the T1/E1 Link Configuration field and press <Enter>. The following menu appears: Nest #1 Slot #8 T1/E1 Link Configuration Clear Network Yel Idle Nbr Link Name T1/E1 Framing FDL Loop Alarm Code Link 01 Disabled T1 ESF Disable No Idle 02 Link 02 Disabled T1 ESF Disable No Idle 03 Link 03 Disabled T1 ESF Disable No Idle 04 Link 04 Disabled T1 ESF Disable No Busy 05 Link 05 Framed E1 Disable No Busy 06 Link 06 Framed E1 Disable No Busy 07 Link 07 Framed E1 Disable No Busy 08 Link 08 Link Not Available 09 Link 09 Out Of Service 10 Link 10 Out Of Service 11 Link 11 Out Of Service 12 Link 12 Out Of Service 13 Link 13 Out Of Service 14 Link 14 Out Of Service [N]ext page [C]opy cfg to all Figure 3-8. T1/E1 Link Configuration Menu Note For the 4 th (unused) link within an E1 group, Link Not Available appears on the screen, and no configuration is possible. 2. To change parameters for an individual link, move the cursor to the link to be changed and press <Enter>. The following menu appears: DT3 Module Configuration 3-9

26 Chapter 3 Configuration Instructions DT3 Installation and Operation Manual Nest #1 Slot #8 Link Configuration Link Nbr...: 1 Name...: Link 01 Status...: Out of Service Clear T1/E1...: Disabled Framing...: T1 ESF Network Loop..: Disabled Tx Yel Alm/RAI: No Unused DSO's..: Busy ESF Format...: Recover Time..: 3 seconds Figure 3-9. Link Configuration Menu Note Use the field descriptions on the following pages to configure the links. Once changes are made to the appropriate fields. 1. Press X to save changes. When prompted: Update Configuration? Are you sure (Y/N)? Press Y. You are then returned to the Links Configuration Menu. 2. To configure another link, or when all links are configured, press X to return to the Node Summary Menu. For the DT3 and D8E1T1 module sets, using the copy configuration ([C]opy cfg to all) feature will prompt a message that will delete connections based on line type changes (e.g., going from T1 to E1 or vice versa). Table 3-3. Individual Link Configuration Menu Field Descriptions Field Link Nbr: (display field) Name: (text field) Status: (option field) Description This field displays the Link Number (1-28) of the link that you are configuring. This is a user-defined field. Any name up to 20 alphanumeric characters can be entered to identify each link on the DT3 module. You may find it beneficial to use DS2/G.747 Group and circuit numbers to name the links. This field is used to select the state of the link. You can put the link In Service or Out of Service. In Service - The link is active. Out of Service - The link is not in use. The Out of Service mode suppresses false alarms that would otherwise be generated by the absence of a received signal. Also, all receive and transmit path time slots in the link are set from Busy to Idle DT3 Module Configuration

27 DT3 Installation and Operation Manual Chapter 3 Configuration Instructions Table 3-3. Individual Link Configuration Menu Field Descriptions (Cont.) Field Description Clear T1/E1: (option field) Clear refers to a condition where the module passes data through without reformatting it in any way (essentially, the module acts the same as a wire). The following selections are available: Framed - Framing is conveyed through the switch fabric. Allows alarms and statistics to be displayed. Unframed - Full bandwidth of the frame is used for data. Passes data without keeping track of alarms and statistics. Limited diagnostics functions are available. Disabled - Framing is terminated and regenerated. Turns off Clear mode (uses standard framing pattern and detects all alarms/errors). All diagnostic functions are available. Note: When using Clear T1 (E1) mode, make the connection ensuring that 25 (32) DS0s have connections mapped. This is necessary because of the way Clear T1 mode operates, taking the framing bits from the first 24 (31) DS0s and sending them all out through the 25th (32nd) DS0. See the chapter entitled Connection Maps in the DXC-100 Installation and Operation Manual. Framing: (option field) This field enables you to select the line type for the link when in Clear T1/E1 Disabled or Framed mode. Network Loop: (option field) Tx Yel Alm/RAI: (option field) Unused DS0 s: (option field) ESF Format: (option field) Recover Time: (option field) (T1 only) The available selections are: T1 ESF, T1 D4, E1, E1-CRC, E1-CAS, and E1-CAS-CRC. CRC = Cyclic Redundancy Check, and CAS = Channel Associated Signaling. When Clear T1/E1 is set to Unframed, the available framing options are T1 Unfrm or E1 Unfrm. This parameter determines the DT3 module s ability to respond to diagnostic commands received from the network supplier. Enabled indicates that the DT3 module will respond to loop commands received from the network supplier, and Disabled indicates that it will not respond. Selectable only in Clear T1/E1 Disabled mode. Yes causes the T1 or E1 circuit to discard data and send a yellow alarm (T1) or RAI (E1) if it is in a red alarm condition for the number of seconds selected in the Recover Time field. Yes must be chosen if the network supplier is a common carrier, such as a telephone company. Selectable only in Clear T1/E1 Disabled mode. This entry is used to select the state of unused DS0s as either Busy or Idle. Selectable only in Clear T1/E1 Disabled mode. Idle - The hex value 7F ( ) is sent. Busy - The hex value FF ( ) is sent. This entry describes the types of ESF network commands to which the DT3 module responds. It has no meaning for D4 networks. With ESF networks, this information must be obtained from the network supplier. Choose between (AT&T Technical Reference 54016) and T1.403 (ANSI specification T1.403). Selectable only in Clear T1/E1 Disabled mode. This field is used to specify how quickly Red/Yellow alarms are cleared following the recovery of the given T1 facility (e.g., valid signal and framing present). Select either 3, 10, or 15 seconds. DT3 Module Configuration 3-11

28 Chapter 3 Configuration Instructions DT3 Installation and Operation Manual 3.4 Accessing the DT3 Main Menu Note The DT3 Main Menu allows you to view the configuration of the DT3 module, run diagnostic tests, access utilities, view N+1 Redundancy status (DXC-100 units with N+1 Protection Switch), and display module identification (software and hardware revision levels). These procedures are detailed on the next several pages. The procedure for accessing the Main Menu for a particular module set will be different for the stand-alone and stack versions. The Navigation Box below shows the two different methods used to get to the Nest Summary Menu, from which the module s Main Menu and all subordinate menus can be accessed. 1. Use the appropriate method from the Navigation Box below to access the Nest Summary Menu. Navigation: Standalone DXC-100 Main Menu Nest Summary OR DXC-100 Stack Main Menu Node Summary Nests Profile Nest with DT3 Module Nest Summary Note On the Nest Summary Menu, the Configured Type must display Hybrid DS-3 (DT3) and the Device State must display Online or Standby in order to access the DT3 Main Menu. If the Device State is Offline, an alert message is generated Accessing the DT3 Main Menu

29 DT3 Installation and Operation Manual Chapter 3 Configuration Instructions Standby SMC not present N+1 Redundancy State: Enabled Alarm Contacts..: Enabled Alarm Contact Type..: Standard Nest #1 Slot Summary Menu N+1 Slot# Group Configured Type Device State Alarm Octal T1/E1 Not Present None 02 Octal T1/E1 Online None 03 Octal T1/E1 Online None 04 Octal High Speed Online None 05 Octal High Speed Online None Not Present None Not Present None 08 Hybrid DS-3 Online None 09 Bb-1 + Hybrid DS-3 Online None 10 Hybrid DS-3 Online None 11 Bb-1 + Hybrid DS-3 Standby None SMCA System Manager A Online None SMCB System Manager B Standby None PSX ProtectionSwitch Online Major [C]lear error counts [S]lot Cfg [P]ort/Link Cfg [T]oggle Alarm Contacts N+1 Device Redundancy: Switch[O]ver [R]estore [E]xpose Figure Nest Summary Menu 2. Then place your cursor on the slot number where the DT3 module is located and press <Enter>. The DT3 Main Menu appears. Main Menu View Configuration Diagnostics Utilities N+1 Redundancy About Figure DT3 Main Menu Accessing the DT3 Main Menu 3-13

30 Chapter 3 Configuration Instructions DT3 Installation and Operation Manual From the Main Menu you can view the configuration of the module, run diagnostic tests, access utilities, view N+1 Redundancy status (DXC-100 units with N+1 Protection Switch), and display module identification (software and hardware revision levels). These procedures are detailed on the following pages. 3.5 View Configuration Menu The View Configuration Menu provides access to three submenus from which the HDS3 Port, DS2/G.747 Groups, and T1/E1 link configuration can be viewed. To actually configure the DT3 module, refer back to the previous section, DT3 Module Configuration. Navigation: DT3 Main Menu View Configuration Configuration Menu HDS3 Port Configuration DS2/G.747 Group Type Configuration T1/E1 Link Configuration Figure DT3 Module View Configuration Menu This menu has three viewable options: Select View HDS3 Port Configuration to view the configuration of the DS3 Port. Select View DS2/G.747 Group Type Configuration to view the configuration of the DS2/G.747 Groups. Select View T1/E1 Link Configuration to view the configuration of the T1/E1 links View Configuration Menu

31 DT3 Installation and Operation Manual Chapter 3 Configuration Instructions View HDS3 Port Configuration Navigation: DT3 Main Menu View Configuration HDS3 Port Configuration Nest #1 Slot #8 HDS3 Port Configuration M13 Operating Mode...: Bellcore M13 Rcv Loop Timing...: Disabled Short Cable < 50'...: Yes M13 Loopback Request Code...: 3rd C-Bit Inverted FEAC Loopback Request...: Disabled Xmit AIS when DS3 in local loop..: None Transmit DS3 AIS...: None Rx DS3 AIS detection selection...: Unframed all ones pattern Figure View DS3 Port Configuration Menu From here, you can view the settings for the DS3 Port. Refer to Table 3-1 for an explanation of the fields in this menu. View Configuration Menu 3-15

32 Chapter 3 Configuration Instructions DT3 Installation and Operation Manual View DS2/G.747 Group Type Configuration Navigation: DT3 Main Menu View Configuration DS2/G.747 Group Type Configuration HDS3 Framer DS2/G.747 Group Type Configuration Group# Type : DS1 2: E1 3: DS1 4: DS1 5: DS1 6: DS1 7: DS1 Figure View DS2/G.747 Group Type Configuration Menu From here, you can view the type of DS2/G.747 groups that have been configured. Refer to Table 3-2 for an explanation of the fields in this menu View Configuration Menu

33 DT3 Installation and Operation Manual Chapter 3 Configuration Instructions View T1/E1 Link Configuration Navigation: DT3 Main Menu View Configuration T1/E1 Link Configuration T1/E1 Link Configuration Clear Network Yel Idle Nbr Link Name T1/E1 Framing FDL Loop Alarm Code Link 01 Disabled T1 ESF Disable No Idle 02 Link 02 Disabled T1 ESF Disable No Idle 03 Link 03 Disabled T1 ESF Disable No Idle 04 Link 04 Disabled T1 ESF Disable No Busy 05 Link 05 Framed E1 Disable No Busy 06 Link 06 Framed E1 Disable No Busy 07 Link 07 Framed E1 Disable No Busy 08 Link 08 Link Not Available 09 Link 09 Out Of Service 10 Link 10 Out Of Service 11 Link 11 Out Of Service 12 Link 12 Out Of Service 13 Link 13 Out Of Service 14 Link 14 Out Of Service [N]ext page Figure View T1/E1 Link Configuration Menu From here, you can view up to 14 links at a time. Press N to view the next 14 links. To view the status of an individual link, move the cursor to the link to be viewed and press <Enter>. The following display appears: View Configuration Menu 3-17

34 Chapter 3 Configuration Instructions DT3 Installation and Operation Manual Link Configuration Link Nbr...: 1 Name...: Link 01 Status...: In Service Clear T1/E1...: Disabled Framing...: T1 ESF Network Loop..: Disabled Tx Yel Alm/RAI: No Unused DSO's..: Busy ESF Format...: Recover Time..: 3 seconds Figure View Individual T1/E1 Link Configuration Menu From here, you can view the configuration of one link at a time. Refer back to Table 3-3 for an explanation of the fields in this menu. 3.6 N+1 Redundancy Menu Note The N+1 Redundancy Menu allows you to view N+1 Redundancy Status. It is applicable to DXC-100 units equipped with the DXC-100PSX N+1 Protection Switch. For specific information and instructions on setting up a DT3 module Set in a redundancy group, refer to the DXC-100PSX Protection Switch Installation and Operation Manual or the applicable sections of the DXC-100 Installation and Operation Manual. If you have only one DT3 module set installed in your DXC-100, Redundancy must be set to Disabled. Navigation: DT3 Main Menu N+1 Redundancy 3-18 N+1 Redundancy Menu

35 DT3 Installation and Operation Manual Chapter 3 Configuration Instructions N+1 Redundancy Menu Device Redundancy Figure N+1 Redundancy Menu N+1 Redundancy Status Menu Navigation: DT3 Main Menu N+1 Redundancy Device Redundancy N+1 Redundancy Status Menu Member of Redundancy Group: No Card Type...: Primary Device State...: Online State Change Count Frame Sync Pulse...: OK 0 Backplane Timeslot Management: OK 0 Communication with System Mgr: OK 0 Rear Card...: OK 0 Framers...: OK 0 [C]lear counters Figure N+1 Redundancy Status Menu The N+1 Redundancy Status Display is a read-only screen. The only action that can be accomplished here is pressing C to clear the counters. Descriptions for each field on this screen are supplied in Table 3-4. N+1 Redundancy Menu 3-19

36 Chapter 3 Configuration Instructions DT3 Installation and Operation Manual Table 3-4. N+1 Redundancy Status Menu Field Descriptions Field Description Member of Redundancy Group: (display field) Yes means that the DT3 module is a member of an N+1 Redundancy Group, while No means that it is not a member of an N+1 Redundancy Group. Card Type: (display field) Device State: (display field) State (column) Displays whether the DT3 module is configured as Primary or Secondary. Displays the current state of the DT3 module as one of the following: Online - The card is good and is on the bus. Standby - The card is good and is off the bus. Offline - The card has general failure (failure that does not affect back-plane operations) however, it is blocked from access to the bus. Defective - The card has general failure and is on the bus. Bus Error - The card has bus failure (failure that will impact other buses) and is off the bus. Bus Error conditions are any or all of the following: System clock is not present Frame sync pulse is not present Front or rear card is not present. A display of OK in this column next to any of the status entries indicates that the function is operating properly, while a display of Missing indicates that it is not operating properly. Change Count (column) The display count in this column indicates the quantity of seconds that an error condition for the associated field been present. Press C to clear the counters. Frame Sync Pulse: (display field) Backplane Timeslot Management: (display field) Communication with System Mgr: (display field) If the state is Missing, it indicates a loss of synchronization error. If the state is Invalid, it indicates that the backplane is flooded with more timeslots than the module can handle. If the state is Lost, it indicates that the module has not received any messages from the DSMC.2 for more than one minute. If the state reads Lost, you most likely have problems with your DT3 module, not the DSMC.2. Rear Card: (display field) If the state is Missing, it indicates the rear card is not being detected. The module will reset after the rear card is detected again. Framers: (display field) If the state is Bad, it indicates one of the T1/E1 framers or the DS3 framer is bad (hardware failure) N+1 Redundancy Menu

37 Chapter 4 Alarms & Diagnostics 4.1 Diagnostics Menu The Diagnostics Menu provides access to several embedded diagnostic facilities, including loopbacks, built-in BERT, and viewing additional statistics. There are multiple loopback options. Each of the links can be independently looped back. The DS3 line can also be looped back. Loopbacks can occur towards the line or towards the backplane. A depiction of various loop types is provided in Figure The built-in BERT generator and testers can be used along with loopbacks to test and determine the status of the DT3 module. They may also be used in conjunction with diagnostic facilities on other DXC-100 cards to qualify operation of the backplane connections. Statistics displays are also provided for monitoring and diagnostic purposes. Navigation: DT3 Main Menu Diagnostics Diagnostics Menu Line Diagnostics Center Line Interface Unit (LIU) Monitor Monitor Control Signals Figure 4-1. Diagnostics Menu Diagnostics Menu 4-1

38 Chapter 4 Alarms & Diagnostics DT3 Installation and Operation Manual The options available from the Diagnostics Menu are described in Table 4-1. Table 4-1. DT3 Diagnostics Menu Option Table Option Description Line Diagnostics Center Opens the Diagnostics Center (Diagnostics Manager) Menu, where the status of the T1/E links and DS3 line are displayed, and from which several submenus may accessed to perform additional diagnostic actions such as loopbacks, BERT, error insertion, and viewing additional statistics. Line Interface Unit (LIU) Monitor Opens the Line Interface Unit Monitor Display, where you can view the status of loopbacks and errors for the LIU. Monitor Control Signals Selecting monitor control signals opens the PCM Signalling Display Menu, which allows you to monitor the payload signaling states and transceiver control signals on a per-link basis. 4.2 Diagnostics Center (Diagnostics Manager) The Diagnostics Manager is used to set up line diagnostics for the DT3 module. Navigation: DT3 Main Menu Diagnostics Line Diagnostics Center Diagnostics Manager DS1/E1 Link Back Bert Testing Link Name State ErrSecs Loop Loop State Duration ErrSecs Link 01 OK 0 Off Off Off 0 0 Link 02 OK 0 Off Off Off 0 0 Link 03 OK 0 Off Off Off 0 0 Link 04 OK 0 Off Off Off 0 0 Link 05 OK 0 Off Off Off 0 0 Link 06 OK 0 Off Off Off 0 0 Link 07 OK 0 Off Off Off HDS3 Framer OK 3 Off NA Off [B]ert [L]oop [E]xpose [S]tatistics (ESF) 15-min Performance [R]egisters [C]lear counters [N]ext [I]n service (toggle view) Figure 4-2. Diagnostics Manager Menu 4-2 Diagnostics Center (Diagnostics Manager)

39 DT3 Installation and Operation Manual Chapter 4 Alarms & Diagnostics From the Diagnostics Manager Menu, a submenu may be viewed or invoked to perform additional diagnostic actions such as loopbacks, BERT, and viewing additional statistics including G.826 statistics. To view an additional 7 links (up to 28 total), press N. To clear counters for the DS3 framer and all 28 links (including those not shown on the current screen), press C. The information contained in each field on the screen is detailed in Table 4-2. Table 4-2. Diagnostics Manager Field Descriptions Field Description LINK FIELDS Link Name: (display field) DS1/E1 State: (display field) Displays the user-defined name for the link, which was entered via the Configuration Menu. This field displays the current status of the T1 or E1 link as one of the following: AIS - Alarm Indication Signal: AIS is set when fewer than three zero bits are received in 512 consecutive bits or, optionally, in each of two consecutive periods of 512 bits. CFA - Change of Frame Alignment: CFA is declared each time the offline framer generates a reframe pulse that aligns the receiver timebase to a new bit position. ERR - Undetermined error type or more than one of the above/below errors present. LOF - Loss of Frame: Receive Loss Of Frame is declared when 3 consecutive FASs have been received in error or, additionally, if bit 2 of NFAS frames has been in error for 3 consecutive occasions. LOS - Loss of Signal: LOS is declared if 32 contiguous zeros have been received. OK - Link is In Service and functioning properly. OOS - Link is Out of Service. RED - Red Alarm: Red Alarm or Carrier Fault Alarm declared when an out-of-frame condition has been present for 2.55 sec(± 40 ms). RSLP - Receive Slip: Controlled slip has been detected on the incoming path. SEF - Severely Errored Frame is reported when the receive signal does not meet requirements of ANSI T SLIP - Slip has been detected in both the incoming and outgoing paths. TSLP - Transmit Slip: Controlled slip has been detected on the outgoing path. YEL - Yellow Alarm: For T1, declares a Yellow Alarm when the Yellow pattern has been received for 425 ms (± 50 ms). For E1, declared when an Alarm Indication is received via TS-0 overhead (E1). Diagnostics Center (Diagnostics Manager) 4-3