ATT System 25 Reference Manual
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ENVIRONMENTAL REQUIREMENTS The base should be located at least; three feet away from any metal object (such as metal window frames), six feet away from any computing equipment, and six feet (20 feet for minimum interference) away from electromagnetic sources.Avoid using the handset in areas with metal objects in the line of sight between the handset and the base. If RFI is experienced while using the set, moving the base to a different location can significantly increase the range. Moving the base to a higher level, perhaps to a different floor, moving it near a window (if the handset is used outside), or even moving the base a couple of feet can significantly improve the transmission range. 6-7
ENVIRONMENTAL REQUIREMENTS AC Power Requirements Each System 25 cabinet requires 500 Watts at 115V ac (maximum). The System 25 power service must be a dedicated branch circuit with no other equipment served (see Figure 6-3). The customer should provide a load center of appropriate current rating (ITE EQ4 typical) equipped with 120V ac, 15 ampere (AMP), single pole magnetic circuit breaker(s) (ITE QP1-BO15 typical).Each breaker is to protect 2 associated wall mounted 115 V ac, 15 AMP, receptacles (HUBBELL 5262 typical). Grounding of this load center is to be provided by a “Green Wire” ground extended from the grounding electrode conductor at the AC service entrance to the load center. The following materials are required: l Single Cabinet System 1 - 15 AMP 3 Wire Dedicated Branch Service 1 - 4 Box (RACO 230 or Equiv.) 1 - 4 Cover (RACO 807 or Equiv.) 1 - Ground Bar (Square D PK9GTA or Equiv.) 2 - Recpt. (Hubbell 5262 15 AMP or Equiv.) l Multiple Cabinet System 2 - 15 AMP 3 Wire Dedicated Branch Service 2 - 4 Box (RACO 230 or Equiv.) 2 - 4 Cover (RACO 807 or Equiv.) 1 - Ground Bar (Square D PK9GTA or Equiv.) 4 - Recpt. (Hubbell 5262 15 AMP or Equiv.) Typically, multiple cabinet systems can be powered from a single phase 120V ac, 60 Hertz service (two 15-amp circuits required). There are no phase restrictions between cabinets. Therefore, the two 15-amp circuits required may be service. The receptacles should be located at least 1 foot above located further than 4 feet from the cabinets. DANGER derived from single or three-phase the floor. Receptacles should not be Under no circumstances should this equipment be connected to 220V ac; doing so poses a serious fire hazard. 6-8
ENVIRONMENTAL REQUIREMENTS Figure 6-3.AC Power Distribution - Multiple Cabinet System 6-9
ENVIRONMENTAL REQUIREMENTS Grounding Connection of an approved ground to the system cabinets is essential. An approved ground may consist of any of the following: l Grounded Building Steel—The metal frame of the building. l Water Pipe—A continuous metal water pipe, not less than 1/2 inch diameter, that is connected to an underground metal water pipe that is in direct contact with earth for 10 feet or more. l Concrete-Encased Ground—An electrode encased by at least 2 inches of concrete and located within and near the bottom of a concrete foundation or footing in direct contact with the earth. The foundation must consist of at least 20 feet of one or more steel reinforcing bars or rods of not less than 1/2 inch diameter, or at least 20 feet of bare, solid copper wire no smaller than No. 4 gauge. l Ground Ring—A ring that encircles a building or structure in direct contact with earth at a depth of at least 2-1/2 feet.The ring must consist of at least 20 feet of bare copper conductor no smaller than No. 2 gauge. Lightning Protection The System 25 lightning protections plan requires five distinct but interdependent items at each installation: l Primary protection in the form of voltage limiters (typically carbon blocks or gas tubes). These devices bypass surges to approved building ground and limit potential differences between T/R pairs and building ground to less than 1500 volts. l A single-point ground (SPG) system that connects green wire ground, System 25 system ground, and telephone company (TelCo) ground together and to approved building ground (Figure 6-3). l Coupled bonding conductor (CBC) connected between the TelCo ground at the building entrance and System 25’s SPG. CBC is tie-wrapped to all trunks to provide lightning protection; it can be a 16-gauge ground wire or continuous cable sheath. The CBC should also be run from the TelCo-provided network interface to the ground block of cabinet 1 (see Figure 3-4 in the “Functional Description”section). If the TelCo has not extended the CBC from the facility entrance to the network interface, the installer should run the CBC along the same route as the incoming facilities where feasible. l Secondary protection provided within TN742 and all trunk CPs; such ports can withstand 800 volt metallic (differential) and 1500 volt longitudinal (common mode) surges. 6-10
ENVIRONMENTAL REQUIREMENTS l Surge protection on the AC power to System 25 and associated equipment (SAT, SMDR, DTU, etc.) provided by the TII 428 Unit. The protection outlined above is adequate for more than 99 percent of all lightning strikes. For the few remaining cases, external secondary protection, located at the trunk access area of the cross-connect field, can be employed.Several commercially available units can be used. If 66-type block terminations are used, a very convenient device is the LP3-230-220 Fused Lightning Protector manufactured by ITW-LINX, 195 Algonquin Road, Des Plaines, Illinois 60016. This unit plugs into the 66-block (in place of the shorting bars) and includes the sneak current fuse. One unit is required per protected pair. A ground bar is provided with the lightning protection units or can be ordered separately (Comcode 901007120). Porta Systems is another supplier of surge protection devices.Regardless of the type installed, all lightning protectors located in the cross-connect area must be grounded to System 25’s SPG via a No. 6 AWG copper wire. Transmission facilities (voice pairs) that extend out-of-building and are not included in the network interface may be installed by the TelCo or through other means (for example, by the building owner and/or the property owner).These facilities, aerial or buried, must be protected with voltage limiting devices and sneak current fuses. The only exception to this rule is buried cable less than 140 feet long that is enclosed in a continuous metallic conduit from one building entrance to the other. The conduit must be connected to an approved building ground at each end. If single-line sets are extended out-of-building, primary protection devices for voice pairs should be used. If MERLIN Communications System voice terminals are extended out-of- building, the facilities must be protected with the TII Model 341 (PEC 32918, Comcode 403865785) at each end.Terminals J1-3 and J1-6 of the Model 341 should not be connected. Maximum distance between a MERLIN System voice terminal and the System 25 cabinet is 2000 feet. There is no limit on how much of the 2000 feet can be out-of-building. However, out-of-building stations cannot be powered over the line; they must be powered locally using PEC 62510. 6-11
PARTS INFORMATION Parts Listed by PEC 7-1 Parts Listed by COMMODE 7-9 -i-
PARTS INFORMATION PARTS INFORMATION This section contains information that may assist you in cross-referencing Apparatus Codes Component Codes (COMCODEs) and Price Element Codes (PECs). The first table is grouped by descriptive PEC. The second table is arranged by COMCODE. Parts Listed by PEC PECDESCRIPTIONAPPARATUS CODE COMCODE 6250-031System 25 Control Unit (R3V2)includes105243810 CarrierJ58901A2 L-13 (e/w) Consists of: Power SupplyWP90510 L2 (MD) 403954761 WP90510 L3406846733 Fans (2)WP90677 L1845416379 Air Filter21985-1403957129 Address Plug* 845416635 TDM Bus TermZHAF1405522780 CPU/MEM CPZTN130 106428907 Service Circuit CPZTN131106035066 SLAC Graphics Overlays (2)*845875772 62501System 25 Expansion Unitincludes CarrierJ58901A1 L4 (e/w) Consists of: Power SupplyWP90510 L2 (MD) 403954761 WP90510 L3 406846733 Fans (2)WP90677 L1 845416379 Air Filter21985-1403957129 Address Plug* 845416635 TDM Bus CableJ58901A4 L3 403961519 62502 GS Trunk CPZTN76103965232 62503 LS Trunk CPZTN77103965240 62504 TR Line CPZTN78103965257 62505 ATL Line CPZTN79103965265 62506 Asynchronous Data UnitD181521 includes105105506 Consists of: Mod Cord (14 ft)D8W-87 103786802 ATL ADU Z3A5103975349 Power SupplyKS-22911 L1403242639 November 19957-1
PARTS INFORMATION PECDESCRIPTIONAPPARATUS CODE COMCODE 62507Digital Tape UnitTS-555A 404079436 62508System Administration Terminal TI-703 404079428 (SAT) 62509 Direct Extension Selector23A1-003 e/W103969424 Console Consists of: Mod CordD6AP-87102937620 Mod Cord (14 ft)D8W-87103786802 Power SupplyKS-22911 L1403242639 Adapter400B103848859 62510 MERLIN® 9 Sys. Voice Terminal D181522 includes105105514 (VT) local power Consists of: AdapterZ400F 103942857 Mod CordD6AP-87 102937620 Power SupplyKS-22911 L1403242639 62511Auxiliary Trunk InterfaceD181523 includes105105522 Consists of: Connecting Block 66E3-25 100009968 Cable (15 ft DE)B25A100017334 62512 Paging/DictationD181524 includes105105530 (Aux Trunk Interface) Consists of: Adapter278A 103871844 Power SupplyKS-22911 L1 403242639 Mod/Spd Tip CordD4BY 102999059 Zener KitD181321 105031181 62513Music-on-Hold InterfaceD181575 includes * Consists of: InterfaceKS-23395405143186 Transformer 2012D102600517 Voice Coupler36A103558916 7-2November 1995
PARTS INFORMATION PECDESCRIPTIONAPPARATUS CODE COMCODE 62514Emergency Transfer Unit10B ETU103984118 Consists of: Cables (2) (15 ft DE)B25A 100017334 Mod Cord (7 ft) D8W-87103786786 62515 Peripheral Interface for On-D-181558 Premises Direct or Switched Connection Consists of: Adapter248B 102802113 Adapter355AF105012645 Adapter400B2104152558 Mod CordD6AP-87102937620 ADU Crossover CordD8AM-87104154430 Mod cords (2) (7 ft)D8W-87103786786 EIA Crossover CordM7U-87104246616 ADU Z3A4103964185 Transformer2012D102600517 62518 STARLAN Interface CPZTN84103965315 62520 STARLAN/ATL InterfaceD181807 includes105355374 Consists of: Y-Adapter WP90851 L1405010620 AdapterKS-23475405462904 Power Supply KS-22911 L1 403242639 MERLIN ® Sys. Headset Adapter 502B105471304 62525AR3V2 Upgrade (R1 or R2 to R3V2) Consists of: CPU/MEM CPZTN130C 106428907 Service CPZTN131 106035066 Documentation & Tapes for555-540-013 105528814 System 25 Upgrade SLAC Graphics Overlays (2) * 845875772 62526N R3V3 Upgrade (R1 or R2 to R3V3) Consists of: CPU/MEM CPZTN142 107057754 Service CPZTN131105275671 SLAC Graphics Overlays (2) *845875772 November 19957-3
PARTS INFORMATION PECDESCRIPTIONAPPARATUS CODE COMCODE 62527NR3V3 Upgrade (R3V1/V2 to R3V3) Consists of: CPU/MEM CPZTN142 107057754 --Service Circuit CPZTN131105275671 63111 Analog Line CPTN742 103556957 63112 MET Line CPTN735103556882 63113 Hybrid Line CPTN762B103976171 63115 CO Trunk CPTN747B105167266 63116 DID Trunk CPTN753 103557062 63118 Aux Trunk CPTN763D10605616 63119 Pooled Modem CPTN758103557112 63123 Tone Detector CPTN748D 106502552 63130 Data Line CPTN726103556791 63136Analog Line CPTN746B106361421 63140Tie Trunk CPTN760D 106360142 63166 DS1 Interface CPTN767103557203 21691ADU Aux Power Consists of: Adapter248B 102802113 Adapter400B103848859 Mod Cord D6AP-87102937620 Transformer2012D 102600517 1020-S90 ACCESS Software*105341218 1020-S91CAM Software *105341382 1203-033n, Advanced Admin. Software *107058372 Rel 3 V3 (MS-DOS) 1203-034n,Advanced Admin. Software *107058398 Rel 3 V3(UNIX) 1207-030 CMS Software *105517106 2169-001Tip Ring ADUZ3A1103963963 2169-002 Tip Ring ADUZ3A2 * 2169-004Tip Ring ADUZ3A4103964185 2169-005 Multiple ADU (MADU)* * 2301-SAASupplemental Alert Adapter ** 7-4November 1995