CIB 3125 (122A) Off-Premises Range Extender. Installation Instructions. Installed By Qualified Technician Only CIB

Transcription

1 CIB 3125 (122A) Off-Premises Range Extender Installation Instructions Installed By Qualified Technician Only CIB

2 1992 AT&T All Rights Reserved Printed in USA Issue 3 August 1992 NOTICE Every effort has been made to ensure that the information in this booklet was complete and accurate at the time of printing. However, the information is subject to change without notice. TRADEMARK NOTICES MERLIN is a registered trademark of AT&T. MERLIN LEGEND is a trademark of AT&T. PARTNER is a registered trademark of AT&T. Safety Information Before installing this product, please read and understand the safety instructions before the installation instructions. This booklet also contains instructions related to safety labels on the product. Such instructions are identified by a triangle symbol, as follows: The exclamation point within an equilateral triangle is intended to alert you to the presence of important operating and maintenance instructions in the literature accompanying the product. Always follow these basic safety precautions when using your telephone equipment. These precautions reduce the risk of electric shock to you and damage to the equipment. WARNING: indicates the presence of a hazard that can cause death or severe personal injury if the hazard is not avoided. CAUTI: indicates the presence of a hazard that will or can cause minor personal injury or property damage if the hazard is not avoided.

3 Safety Instructions for Installation Personnel WARNING: This product must be installed by a qualified technician only and must be properly grounded. Failure to do so can result in a risk of electrical shock, which may cause serious personal injury. Before product installation, verify that you are installing the equipment in a properly grounded 3-prong AC receptacle. If not, stop the installation and contact a qualified service technician. Use only AT&T, Model , Class 3 wall plug-in unit with this product. This product must be installed within six feet of the approved ground AC outlet that the Communications System control unit is connected to. The green ground wire must be connected to the product ground terminal and to the AC receptacle ground screw. Never install telephone wiring during a lightning storm. Never install telephone jacks in wet locations unless the jack is designed for wet locations. Never touch uninsulated telephone wires or terminals unless the telephone line has been disconnected at the network interface. Use extreme caution when installing or modifying telephone lines. All wiring that connects to this equipment and becomes part of the building wiring must be a minimum of CLASS 2 or UL Listed and CSA Certified Communications cable. Important Safety Instructions WARNING: Risk of Electrical Shock Failure to properly ground this product will result in a risk of electrical shock, which can cause serious personal injury. This product requires a property grounded 3-prong AC receptacle for safe operation. If not properly grounded, stop the installation and contact a qualified service technician.

4 Read and understand all instructions. Follow all cautions, warnings, and instructions marked on the product. This product can be hazardous if immersed in water. If you suspect a gas leak, report it immediately, but use a telephone away from the area in question. The telephone s electrical contacts could generate a tiny spark. While unlikely, it is possible that this spark could ignite a heavy concentration of gas. This product is not approved for use in areas labelled as explosive environments. Only Explosive Atmosphere Telephones may be used in such hazardous environments. To reduce the risk of electric shock, do not disassemble this product. There are no user serviceable parts inside. Opening or removing covers may expose you to hazardous voltages. Incorrect reassembly can cause electric shock when the product is subsequently used. Do not use liquid cleaners or aerosol cleaners. Unplug the wall plugin unit from the wall outlet and remove cords from the modular jacks on the face of the unit before cleaning. Clean the outside of the unit only with a damp cloth. Never place this product near or over a radiator or heat register. This product is not designed for outdoor installation. Install the product only inside the building. The product wall plug-in unit is equipped with a 3-prong plug. This plug will only fit into a 3-prong receptacle. If you are unable to plug the wall plug-in unit into the wall receptacle, contact a qualified service technician to replace your obsolete wall receptacle. Do not cut or remove the grounding prong from the wall plug-in unit plug or use 2-wire extension cord or adapter to defeat the grounding safety feature of the wall plug-in unit connected to the product. Do not allow anything to rest on the power cord to the unit. Do not locate this product where the cord will be abused by persons walking on it. Do not overload the wall outlet or extension cords, as this can result in the risk of fire or electric shock.

5 Unplug the wall plug-in unit from the wall outlet receptacle, remove the cords from the modular jacks on the faceplate of the unit, and refer servicing to qualified personnel under the following conditions: When the wall plug-in unit power cord is damaged or frayed. If liquid has been spilled on the product. If the product has been exposed to rain or water. If the product does not operate normally by following the operating instructions. Adjust only those controls that are covered by the operating instructions because improper adjustment of other controls may result in damage and will often require extensive work by a qualified technician to restore the product to normal operation. If the product has been dropped and the housing has been damaged. WARNING: Failure to follow these insructions could lead to personal injury and property damage. It will also void product warranties on all protected equipment. SAVE THESE INSTRUCTIS

6 Federal Communications Commission (FCC) Warning Statement This equipment has been tested and found to comply with the limits for a Class A dgital device, pursuant to Part 15 of FCC rules. These limits are designed to provide reasonable protection against harmful interference in a commercial or residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction booklet, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this the 122A OPRE unit does cause harmful interference to radio or television reception, which can be determined by unplugging the 122A OPRE unit, the user is encouraged to try to correct the inteference by one or more of the following measures: Where it can be done safely, re-orient the television or radio antenna. To the extent possible, relocate the television, radio, or other receiver with respect to the telephone equipment. Plug the 122A OPRE unit into an AC outlet that is not on the same circuit as the one used by the radio or television. FCC Notification and Repair Information The 122A Off-Premises Range Extender (OPRE) is registered with the Federal Communications Commission (FCC) in accordance with Part 68 rules. The two network interface jacks are RJ11C. When the OPRE is used as an off-premises range extender, the Facility Interface Code is OL13C or metallic depending on the application. When the OPRE is used on the Central Office line side of a system, the Facility Interface Code is 02LS2. On the bottom of the OPRE is a label that contains, among other information, the FCC registration number and ringer equivalence number (REN) for this equipment. If requested, this information must be provided to the telephone company.

7 Registered equipment may not be used with Coin Telephone Lines. Equipment may be used with Party Lines in areas where state tariffs permit such connections and when such equipment is applicable for such service. Installation must be performed by qualified service persons. Connection of registered equipment of the telephone network must be through standard network interface jacks. Each telephone service company has standards regarding the signals which will ring devices. This determines the type and number of devices which can be attached to the line. A Ringer Equivalence Number (REN) determines the relative value of each device. In most, but not all areas, the sum of the RENs should not exceed five (5.0). To be certain of the number of devices that may be connected to the line, as determined by the total RENs, contact the telephone company to determine the maximum REN for the calling area. The telephone company may make changes in it s facilities, operations, or procedures that could affect the operation of the equipment. If this happens, the telephone company will provide advance notice in order for you to make the necessary notifications in order to maintain uninterrupted service. If the 122A OPRE unit causes harm to the telephone network, the telephone company may disconnect service temporarily. If possible, the telephone company will try to notify you in advance. If advance notice is not possible, you will be notified as soon as possible. You will be given the opportunity to correct the problem and informed of your right to file a complaint with the FCC. The OPRE does not affect the performance of hearing-aid-compatible equipment. No repairs should be performed by the customer. If trouble is experienced with this equipment, please contact the following customer service location for repair and warranty information: or write: AT&T General Business Systems, National Service Assistance Center, 7200 S. Alton Way, Englewood, Colorado,

8 CIB 3125 (122A) Off-Premises Range Extender The 122A Off-Premises Range Extender (OPRE) (Figure 1) allows various tip/ring interfaces on the MERLIN LEGEND, MERLIN II, PARTNER and System 25 Communications systems to support the following applicatons: off-premises operation with off-premises station (OPS) and metallic private line (MPL) services extended range operation, within the building and out-of-building gain for Remote Access, Direct Inward System Access (DISA), and conferencing applications with loop start lines. FIGURE 1 122A Off-Premises Range Extender Front Panel NOTE: The 122A OPRE is intended for use with touch-tone phones only. The message waiting feature will only operate properly on phones equipped with LED indicators. 1

9 PARTS LIST The 122A OPRE box contains the following parts: 12 AWG Stranded Green Ground Wire (7 Feet) Ground Wire Lugs Ground Wire Screw Double Sided Adhesive 2 Pair D6AP 7 Feet Telephone Modular Cord Mounting Plate Power Unit 122A OPRE Front Panel AT&T Model Screws Anchors FIGURE 2 122A OPRE Parts List 2

10 Installation Requirements WARNING: Before installing the 122A OPRE, check the AC outlet ground connection of the control unit for approved grounding. Improper grounding can result in a serious safety hazard. CAUTI: Use only AT&T Power Unit model number Before installing the 122A OPRE, verifiy with the telephone company that the following specification for the telephone lines are available for the connection of the 122A OPRE to the off-premises station: standard jacks (USOC RJ11C) Facility lnterface Code (FIC OL13C). Primary protection is required at all network interfaces and the connections to out-of-building wire runs. Before installing the 122A OPRE, first ensure that a primary protector is installed and connected to an approved ground. NOTE: All installations must follow requirements outlined in NEC Article 800 of the National Electrical Code Handbook and AT&T Standard Practice # , Station Protection and Grounds. The 122A OPRE must be located and installed within six feet of the approved ground AC outlet of the control unit. This allows the wire and modular cord connections sufficient slack for operation. When the front panel faces down after the wall mount installation, all connections to the 122A OPRE (for example, modular jacks, power unit connectors, and ground wire) must be installed allowing ample space for access to the front panel. After installation, all connections (cords) must have enough slack to allow the 122A OPRE to be removed from the wall unit for testing and maintenance. 3

11 Wall Mounting the 122A OPRE Unpack the 122A Off-Premises Range Extender unit and the package containing the mounting plate, plastic wall anchors, screws, and double-sided adhesive. Select a location for the 122A OPRE not more than six feet from the approved grounded AC outlet. Hold the mounting plate level against the desired location on the wall, and mark the holes with a pencil or sharp object (Figure 3). Mounting Plate (use for markings) Wall (Side view) Mounting Screw Locations FIGURE 3 Wall Mount Markings for the 122A OPRE 4 Using a 5/32 inch drill bit, drill a hole through each of the mounting plate marks on the wall. 4

12 5 lnsert one of the plastic screw anchors into each of the holes (Figure 4 A,B). Screw Anchor Leave 1/8 inch of screw exposed (do not tighten flush to wall) A B C FIGURE 4 Inserting Anchors and Screws for the 122A OPRE 6 Insert and thread the screws into the wall anchors, leaving sufficient room to mount the wall plate. (Figure 4C). NOTE: Do not tighten the screws flush to the wall mounting plate. 5

13 7 Locate and mount the double-sided adhesive to the mounting plate (Figure 5). Mounting Plate Wall OPRE (Front Panel) Double-Sided Adhesive (Side view) Mounting Screw Locations FIGURE 5 Mounting Plate with Tape for the 122A OPRE 8 9 Mount the 122A OPRE unit box to the mounting plate with the front panel of the unit facing towards the floor (Figure 5). To connect and test the 122A OPRE for operation, refer to one of the following sections depending on your installation: Connecting the 122A OPRE for Off-Premises and Extended Range, Testing the 122A OPRE for Off-Premises and Extended Range, and Connecting the 122A OPRE with the Remote Station. Connecting the 122A OPRE for Remote Access, DISA, or Conferencing Applications and Testing the 122A OPRE for With the Loop Start Line of the Control Unit. 6

14 Connecting the 122A OPRE for Off-Premises and Extended Range Be sure the location for the 122A OPRE not more than six feet from the approved grounded AC outlet for the control unit. Locate the long grounding screw and replace the existing center screw of the control unit s AC outlet. Attach the ground lugs (provided) to both ends of the 12 AWG stranded green ground wire (provided). NOTE: The length of this green ground wire is limited to a maximum. of seven feet. When attaching the wire, be sure to allow slack of 1 foot of wire for grounding. Secure one end of this green ground wire to the 122A OPRE s screw terminal on the front panel labelled GROUND (Figure 6). Secure the other end of the green ground wire to the approved ground on the AC outlet into which the control unit is plugged (Figure 6). See Grounding Multliple Units on page 14. Insert the wall plug-in power unit connector into the jack labelled POWER on the front panel of the 122A OPRE (Figure 6). Insert the AC plug of the power unit into the approved ground on the AC outlet into which the control unit is plugged (Figure 6). Insert one end of a two-pair D6AP telephone modular cord (provided) into the jack labelled IN on the front panel of the 122A OPRE (Figure 6). Insert the other end of this two-pair D6AP telephone modular cord into the appropriate tip-ring station port on the control unit (Figure 6). Proceed to test the 122A OPRE unit. TESTING THE 122A OPRE FOR OFF-PREMISES AND EXTENDED RANGE NOTE: Verify that all the gain switches are in the or up (factory default) positions. 1 Insert one end of a two-pair D6AP telephone modular cord into a telephone set. 7

15 Insert the other end of this modular cord into the jack labelled OUT on the front panel of the 122A OPRE. Place an intercom call to the station port. Verify that the connected telephone set rings. Pick up the telephone handset and answer the call to check for acceptable voice transmission levels. After checking for acceptable voice transmisson levels, disconnect the modular jack from the jack labelled OUT on the front panel of the 122A OPRE and the telephone set. Proceed to connect the 122A OPRE with the remote station. CNECTING THE 122A OPRE WITH THE REMOTE STATI 1 Insert one end of the two-pair D6AP telephone modular jack into the jack labelled OUT on the front panel of the 122A OPRE (Figure 6). 8

16 AC Outlet Control Unit Approved Ground Power Unit Control Unit 122A OPRE Front Panel Power Unit Connector 12 AWG Stranded Green Ground Wire (Max. 7 Feet) 2 Pair D6AP 7 Feet Telephone Modular Cord (Not Provided) To Tip-Ring Station Port or Control Unit (Allow 1 Foot Slack for All Wires and Cords) 2 Pair D6AP 7 Feet Telephone Modular Cord (Provided) To Network Interface Jack OR OR Building Entrance *NOTE Outside Telephone Line To Remote Station Within Building To Remote Station Building Entrance Out of Building Line *NOTE *NOTE: Verify primary protector exists at this point and is connected to an approved ground FIGURE 6 Connecting the 122A OPRE With the Remote Station Insert the other end of this two-pair D6AP telephone modular cord into the interface for the remote station (Figure 6). Place an intercom call to the tip-ring station port connected to the 122A OPRE. Verify that the connected off-premises telephone set rings. Pick up the telephone handset and answer the call to check for acceptable voice transmission levels. 9

17 6 For this installation, if voice transmission levels are: Acceptable: the 122A OPRE installation is complete. Not Acceptable: adjust the gain settings. Refer to Adjusting the Gain Switches on the 122A OPRE presented later in this booklet. After adjusting the gain switches for acceptable voice transmission levels, the 122A OPRE installation is complete. 7 After all the connections are completely attached, be sure to hang the 122A OPRE unit on the wall for the wall mount installation. Connecting the 122A OPRE for Remote Access, DISA, or Conferencing Applications Be sure the location for the 122A OPRE unit is more than six feet from the approved grounded AC outlet of the control unit. Locate the long grounding screw and replace the existing center screw of the control unit s AC outlet. Attach the ground lugs (provided) to both ends of the 12 AWG stranded green ground wire (provided). NOTE: The length of this green ground wire is limited to a maximum of seven feet. When attaching the wire, be sure to allow slack of 1 foot of wire for operation. Secure one end of the green ground wire to the 122A OPRE s screw terminal on the front panel labelled GROUND (Figure 7). Secure the other end of the green ground wire to the approved ground on the AC outlet into which the control unit is plugged (Figure 7). See Grounding Multiple Units on page 14. Insert the power unit connector into the jack labelled POWER on the front panel of the 122A OPRE (Figure 7). Insert the AC plug of the wall plug-in power unit into the approved ground on the AC outlet into which the control unit is plugged (Figure 7). 10

18 Insert one end of a two-pair D6AP telephone modular cord into the jack labelled IN on the front panel of the 122A OPRE (Figure 7). Insert the other end of this two-pair modular cord into the network interface connection to the telephone company Central Office line (Figure 7). Proceed to test the 122A OPRE unit. TESTING THE 122A OPRE FOR REMOTE ACCESS, DISA, OR CFERENCING APPLICATIS NOTE: Verify that all the gain switches are in the (up or factory default) position. 1 Insert one end of a two-pair modular cord into the jack labelled OUT on the front panel of the 122A OPRE (Figure 7). Control Unit 2 Pair D6AP 7 Feet Telephone Modular Cord (Provided) 122A OPRE Front Panel AC Outlet Control Unit Approved Ground Power Unit Power Unit Connector 12 AWG Stranded Green Ground Wire (Max. 7 Feet) 2 Pair D6AP 7 Feet Telephone Modular Cord (Not Provided) To Network Interface Network Interface Central Office Telephone Line (Allow 1 Foot Slack for All Wires and Cords) *NOTE *NOTE: Verify primary protector exits at this point is connected to an approved ground FIGURE 7 Connecting the 122A OPRE for Remote Access, DISA, or Conferencing 11

19 Insert the other end of this modular cord into the line jack of the control unit (Figure 7). Place a call to the Central Office line connected to the 122A OPRE. Verify that one of the station sets associated with the Central Office line rings at the control unit. Pick up the telephone handset and answer the call to check for acceptable voice transmission levels. For this installation, if voice transmission levels are: Acceptable: the 122A OPRE Remote Access, DISA, or Conferencing installation is complete. Not Acceptable: adjust the gain settings. Refer to Adjusting Gain Switches on the 122A OPRE in the next section of this booklet. After adjusting the gain switches for acceptable voice transmission levels, the 122A OPRE DISA/Conferencing installation is complete. After all the connections are completely attached, be sure to hang the 122A OPRE unit on the wall for a wall mount installation. Adjusting the Gain Switches on the 122A OPRE The 122A OPRE unit provides variable gain for voice transmission levels. The voice transmission levels can be adjusted using the switches labelled GAIN located on the 122A OPRE front panel. The level of gain is dependent on the installation of the 122A OPRE unit and may not be necessary. The gain setting is dependent on the loop lengths associated with the installation: short loop lengths may require zero (no gain) to moderate gain adjustments and longer loop lengths may require moderate to high gain adjustments. 12

20 Table 1 provides guidelines for setting gain using the 122A OPRE switches if the loop length is known for either of the following installation configurations: Off-premises and extended range: loop length from the jack labelled OUT to the remote station Remote Access DISA, or Conferencing: loop length from the Central Office to the jack labelled IN. Either of two methods may be used to determine the correct gain setting for a given OPRE installation. One involves measuring the loop resistance with an ohmmeter, then determining loop length from the measurement. The second method requires measuring AC output of a DTMF telephone at the telephone and then at the OPRE to determine the loss in the line. Note that either method requires at least two people, and/or that the technician make several trips between the OPRE installation site and the off-premises site. Method 1: Before connecting the off-premises line to the OPRE, place a short across Tip and Ring of the line at either end. At the other end, measure the resistance from Tip to Ring. Divide the resistance (in ohms) by 83. The result equals the loop length in thousands of feet. Now refer to Table 1 on the following page for the correct gain setting. Method 2: With the OPRE completely installed, verify operation of the off-premises telephone by going off-hook and listening for dial tone. If possible, place a call to another station on the system. Have the receiving end place the call on hold. With an AC voltmeter, measure the voltage across Tip and Ring at the telephone with dialpad 1 depressed. At the OPRE, measure the AC voltage across Tip and Ring on the IN port. Adjust the gain switches until the voltage measurements are as closely matched as possible. Retrieve the call from hold at the called station, and release the dialpad. Similar procedures should be used when installing an OPRE between an incoming CO line and a line port of a swtich. With either method it will be necessary to assess the level and quality of normal speech during a call. Refer to Table 1 and adjust the gain up or down as necessary. NOTE: Excessive gain can cause cross-talk or squealing on the line. 13

21 Table 1: Gain Switch Settings for the 122A OPRE Switch Gain (db) Loop Length (ft.)* OFF OFF OFF OFF NE to to to to to 11,000 11,000 to 13,000 13,000 to 15,000 15,000 to 17,000 * 26 AWG NOTE: Be sure to complete the 122A OPRE installation connections after adjusting the gain swtiches for any installation configuration in this booklet. Grounding Multiple Units Multiple OPREs may be grounded at the same outlet provided the groundng screw is of sufficient length to securely fasten the ground wire terminals. Up to six OPREs may be grounded with a single 12 AWG ground wire by connecting the units together with short lengths (6 in. max.) of the enclosed ground wire, with the terminals properly installed on each end. The total length of the ground wire must not exceed 10 feet. 14