ADTRAN 25 - Manual

FCC WARNING STATEMENT Federal Communicatlons Commission (FCC) Rules require that you be notified of the following: This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may causeinterference to radio communica...

Contents INTRODUCTION FCC PRECAUTIONS I N S T A L L A T I O N T O O L S A N D T E S T E Q U I P M E N T CROSS-CONNECT EQUIPMENT DESCRIPTION Trunk Access Equipment 700A-110-BI -25 or 700A-66-B1-25 Cut-Down Jack 108 Emergency Transfer Unit (ETU) Station Interconnect Panel (SIP) 6 1 7 A P a n e lA d a ...

7300H Series Voice Terminals INSTALL MUSIC-ON-HOLD INTERFACE FCC-Registered Music Source Interface Non-FCC Registered Music Source Interface INSTALL EXTERNAL ALERTS INSTALL RECORDED DELAY ANNOUNCEMENT 2-115 2-1172-1172-119 2-1202-121 2-121 2-1212-122 2-1242-128 INSTALL DICTATlON SYSTEM INTERFACE INS...

MAKE POOLED MODEM TEST CALL . . . . TEST TRANSFER TO DATA . . . . ... . . . TEST EXTERNAL ALERT (NIGHT SERVICE) TEST T E S T T E S T T E S T T E S T 3-11 3-11 3-12 DICTATION SYSTEM ACCESS 3-13 PAGING INTERFACE MUSIC-ON HOLD EMERGENCY TRANSFER TOUCH-TONE RECEIVERS 3-13 3-14 3-15 3-16 MAINTENANCE 4-1 ...

ROUTINE MAINTENANCE Reseating and Replacing Circuit Packs Removing and Restoring Power Restarting the System E R R O R L O G Accessing the Error Log From the SAT ERROR MESSAGES Clearing System-Detected Troubles Complete System Failure Common Control Trouble Circuit Pack Trouble Frontplane Ribbon Con...

Figures Figure 2-1.Figure 2-2.Figure 2-3.Figure 2-4.Figure 2-5.Figure 2-6.Figure 2-6a.Figure 2-7.Figure 2-8. Figure 2-9.Figure 2-10. Figure 2-11. Figure 2-12. Figure 2-13. Figure 2-14.Figure 2-15.Figure 2-16.Figure 2-17.Figure 2-18.Figure 2-19. Figure 2-20. Figure 2-21. Figure 2-22. Figure 2-23. Fig...

Figure 4-8.F i g u r e 4 - 9 . Figure 4-10.Figure 4-11.Figure 4-11.a.Figure 4-12. Figure 4-13. Figure C-1.Figure C-2. Figure C-3. Table 2-A. Table 2-B.Table 2-C. Table 2-D.Table 2-E.Table 2-F. Table 4-A. Table 4-B. Table 4-C.Table 4-D. Table 4-E. Table 4-F. Table A-A. Table A-B.Table A-A. Table A-B....

INTRODUCTION ● ● ● ● ● ● ● ● S e c t i o n 5 R e f e r e n c e s - L i s t s a n d describes other related d o c u m e n t a t i o n Section 6 Abbreviations and Acronyms-Lists and describesabbreviations and acronyms frequently encountered in System 25 documentation Appendix A. System Wiring Table–Li...

INSTALLATION INSTALLATION Installation of a System 25 requires the completion of a number of basic steps, similar to those required to install any customer switching system. Assuming that the building (station) wiring is already in place, the recommended sequence of steps for installation of the sys...

INSTALLATION TOOLS AND TEST EQUIPMENT Table 2-A lists tools and test equipment required for installing a System 25. Table 2-A. Tools and Test Equipment Required for Installation T a s k s T o o l s R e q u i r e d Recommended Type Install Push Drill Cross-Connect Screwdriver 8-inch Flat Blade Field ...

INSTALLATION CROSS-CONNECT EQUIPMENT DESCRIPTION This section provides a brief description of some of connect/interconnect equipment. More details on the can be found in the Reference Manual (555-540-200).the following: ● Trunk Access Equipment 700A Jacks Emergency Transfer Unit ● Station Interconne...

INSTALLATION Trunk Access Equipment The trunk access equipment (TAE) consists of 700A-I 10-61-25 or 700A-66- B1 -25 (157BF) cut-down jacks, or equivalent, and up to four 10B Emergency Transfer Units (ETUs). The 10B ETU is shown in Figure 2-1. 700A- 110-M-25 or 700A-66-B1-25 (157BF) Cut-Down Jack Tru...

INSTALLATION Station Interconnect Panel (SIP) The SIP is the station cross-connect field and consists of the followinge q u i p m e n t : ● 617A Panels ● A d a p t e r s ● 50A Fanning Strips. 617A Panel The 617A Panel is a metal plate with keyslot holes on each side for mounting on a backboard. (See...

INSTALLATION Adapters The adapters shown in Figure 2-3 are used at the SIP. Z210A2 or 858A Adapters These adapters connect the building wiring (station runs) to the station port circuit packs (CPs) located in the system cabinets (through octopus cables).As many as 40 of these adapters may be require...

INSTALLATION Fanning Strip The 50A Fanning Strip (Figure 2-4) is a metal panel with positions to hold 16 octopus (switch) cables. The bundled portion of the octopus cable is anchored at the fanning strip. The eight octopus cable cords hang free. One fanning strip is required for 1-cabinet systems. T...

INSTALLATION Cables Splitter Cables The splitter cables (Figure 2-5) connect trunk circuits from the 700A jacks to the system cabinets or 10B ETU (3:1 only). 3:1 Splitter Cable (WP90929, L1) This cable connects the twenty-four 1-pair trunk circuits on a 700A jack to three 8-port trunk circuit packs ...

INSTALLATION Octopus Cables Octopus cables (Figure 2-6) connect the station port and CPU/Memory circuit packs to the SIP adapters. Each cable consists of a 25-pair male connector thatconnects to the switch cabinet and eight modular plugs that connect to the SIPadapters. These cables are provided wit...

INSTALLATION connector and a KS23146,L3 50-pin male connector. To connect a DS1 interface circuit pack to a 551-type Unit (CSU), field terminate the 15-pin plug. To connect DS1 tie trunks on co-located System 25s, 50-pin male connector (see Figure 2-1 9). Customer Service field terminate the ● C6E c...

INSTALLATION Symbols Used in Figures Modular jacks are shown by the triangle symbol. The 25-pair connectors are indicated by shaded blocks. Generally, only one leg of an octopus cable isshown. Unterminated wiring requiring cut down or other termination does notshow symbolic designations. The 103A Co...

INSTALLATION PREINSTALLATION REQUIREMENTS The AT&T System 25 Reference Manual (555-540-200) provides a complete listing of System 25 equipment location requirements. Before installation begins, check the items described in this section. Caution: System 25 cross connect hardware must be located i...

NOTES : 1. 2. 3. 4. 5. 115V AC, 60 Hz, 15 AMP OUTLETS(HUBBELL 5262 OR EQUIVALENT) MUST BE LOCATED WITHIN 4 FEET OF SYSTEM CABINETS. MULTIPLE CABINET SYSTEMS REQUIRE TWO QUAD OUTLETS, SINGLE CABINET SYSTEMS REQUIRE ONE QUAD OUTLET. ALLOW AT LEAST 24 INCHES OF SPACE IN FRONT OF CABINETS. TABLE MUST BE...

INSTALLATION 3. 4. metal frame of the building, a concrete encased ground, or a ground ring. If these grounds are not available, the water pipe ground canbe supplemented by one of the following types of grounds. ● Metal underground gas piping system—an electrically continuous metal underground gas p...

INSTALLATION Secondary Protection External secondary protection, located at the trunk access area of the System 25 cross-connect field, is required for all trunks and off-premiseslines. Refer to Table 2-B for approved trunk protectors. FROM AC LOAD CENTER (TWO SEPARATELY FUSED 15 AMPC I R C U I T S ...

INSTALLATION Building Wiring Building (station) wiring (must be 24 AWG or heavier) from voice and data terminals to the equipment location should already be in place. System 25wiring requires that 4-pair circuits be distributed from the equipment location to each station’s wall jack. The SIP hardwar...

INSTALLATION INSTALL SYSTEM CABINETS Before beginning the cabinet installation, position the cabinet table within 2 feet of the ac power receptacle. Make sure that the cabinets are easily accessible from both the front and the back. Position Cabinet(s) C a u t i o n : A f u l l y - e q u i p p e d c...

INSTALLATION Install 4A Retainer Clips The 4A retainer clips must be installed on each of the 12 receptacles on the lower rear panel of the cabinets. To install a clip, position it and insert thelegs in the cabinet as shown in Figure 2-12. Figure 2-12. 4A Retainer Clip Installation 2-29

INSTALLATION Connect Cabinets The Time Division Multiplex (TDM) bus extender cable and the intercabinet #6 AWG ground wire must be connected between cabinets. The TDM bus terminates on each side of the cabinet, and the intercabinet #6 AWG groundwire connects to the ground block at the rear of each c...

INSTALLATION Ground Wire Connections The cabinets are connected to the single-point ground with #6 AWG copper wires. (Building ground requirements are described in Preinstallation Requirements in this section.) Warning: The cabinet power switches must be set to off. 1. In 2- or 3-cabinet systems, co...

INSTALLATION 5. Starting with Cabinet 2 or 3, turn on the power switch on each cabinet [Cabinet 1 must be last). IMPORTANT: If power to Cabinet 1 is not turned cold start initialization may not occur properly. 6. Check to be sure that the cabinet fans are rotating. Connect Administration Equipment o...

INSTALLATION Cold Start the System To ensure that the system recognizes the current position of the CPs, you must cold start the system before beginning initialization. A cold start causes the system to check all slots for valid CP types and assign defaulttranslations to ail ports (except auxiliary ...

INSTALLATION The SAT message for a cold or warm start appears after the system hasperformed all self-tests and reading of its configuration. Typical cold start SATmessage is as follows. The example is for a 2-cabinet system. Typical Release 3 Version 3 Cold Start Message R E S T A R T TS ROM pair 1:...

INSTALLATION Check Performance of Cabinet Components Each CP has three colored LEDs on the front panel that indicate whether it is functioning properly or not. When a cold start is performed, the system undergoes a series of self-tests and loads default translations. Upon initial power application, ...

INSTALLATION Figure 2-15. Typical System 25 Port Circuit Pack Report Problems Follow local procedures to report faulty or damaged equipment. 2-42 November 1995

INSTALLATION Initialize System Instructions for initializing the system (based on the completed implementation forms) are provided in the A d m i n i s t r a t i o n M a n u a l (555-540-500). Note: Before trunks using DS1 Signaling are administered, all link level parameters such as signaling and f...

INSTALLATION Install TAE, 617A Panels, and Fanning Strips To install this equipment, proceed as follows: 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. For each RJ21X, RJ2GX, and RJ48X 700A Jack 1/2-inch from the edge of switch cabinet(s). Mount the first 617A Panel. network interface, install one the backboard...

INSTALLATION N O T E : G R E A T E R T H A N 4 8 " F O R 5 - P A N E L A R R A N G E M E N T F I R S T 1 0 8 E T U Figure 2-17. Alternate SIP and TAE Backboard Layout 2-46

INSTALLATION INSTALL MODULAR BULK POWER SUPPLY (Optimal) The 346 Modular Bulk Power Supply (MBPS) is a cost-effective and flexible alternative to the KS-2291 1 power supply. The 346 MBPS can be used where the wall-mounted (outlet) KS-2291 1 power supply cannot be used orwhere multiple KS-2291 1 powe...

INSTALLATION Connect Cabinets to TAE Blocks The connections between the cabinets and the TAE blocks are made using connectorized splitter cables. Make sure that each trunk group on eachconnecting block is connected to the correct type of CP and protected with its approved secondary protector (as sho...

INSTALLATION Connect Tie Trunks A 2:1 connectorized splitter cable, WP90929, L3, is required to connect the700A Jack to the cabinet for tie trunks. 1. 2. 3. 4. 5. 6. Install secondary protectors (see Table 2-B). Using the cable label sheets provided (Figure 2-7), label the back of the hood of each o...

INSTALLATION Install DS1 DS1 signaling allows a digital connection between the System 25 and otherPBXs, Central Offices, Toll Offices, off premise stations, and data end points such as host computers. The TN767 emulates ground start, Ioopstart, tie and DID Trunks in addition to off premises stations...

INSTALLATION Off Premises Metallic (Cable) Connections The connection between the System 25 and another DS1 interface is in most cases a T1 line with repeaters. The proper lightning protection must be provided (as shown in Table 2-B). Figure 2-23 shows a diagram of the off premise cabling. See the “...

INSTALLATION Connect the CSU The CSU can be powered by the line or from a locally provided -48 V dc power supply. Figure 2-25 shows the connections for connecting the CSU. The 48 V and GRD leads are optional according to how the CSU is powered. H 6 0 0 3 0 7 , 0 2 C O N N E C T O R C A B L E ( N O T...

INSTALLATION INSTALL EQUIPMENT ROOM STATION CABLING System 25 is connected to the building (station) wiring in two stages. First, the building wiring is connected to the Station Interconnect Panel (SIP).Then, the octopus cables from the back of the cabinets are connected to the SIP. Accurate documen...

INSTALLATION Connect Building Wiring to SIP The type of building wiring termination determines what types of adapters are used. Two types are supported: 4-pair cable (cut down) and modular jack.Any combination of adapters may be mounted on a 617A Panel. Cluster the connection on the SIP by voice ter...

INSTALLATION 4-Pair Cable Terminations Each 4-pair cable supports one station (Figure 2-28). It connects to a wiring block on a 858A Adapter. 1. 2. 3. 4. 5. 6. Run the 4-pair cable through the rings at the top of the 617A Panels. Cut down the leads starting with Pin 1 of the wiring block locatedbesi...

INSTALLATION ZZ1OA1 ADAPTER (MODULAR TOMODULAR) PURSE LOCK CLIP (TYPICAL) Figure 2-28. Cut Down Terminations Connected to the SIP 2-65

NSTALLATION Prepare Carrier Loading Labels As you connect the port CPs in each cabinet to the SIP, list the connections on the Carrier Loading label. This label is mounted on the inside of the frontcover of the cabinet. (See Figure 2-29.) Keep track of –48 volt power usage so that the power supply i...

INSTALLATION Modify Octopus Cables if Required If flag--type cable ties are shipped loose, they must be installed on the early production octopus cables. The flag-type cable tie location depends on the type of SIP arrangement (Figures 2-16 and 2-17). Also, if the alternate SIParrangement is used, la...

INSTALLATION Make SIP Connection for CPU/Memory In all cases, the CPU/Memory is connected to the SIP via an octopus cable. Since there are four ports on the CPU/Memory (port 1 for the SAT, port 2 forSMDR, port 3 for the DTU, and port 4 [reserved]), plugs 1 through 3 on the octopus cable are used to ...

INSTALLATION FLAG-TYPE CABLE TIES STANDARD CABLE I MODIFIED CABLE FOR (FLAG TIE ALTERNATE SIP ARRANGEMENT AT 65” REMOVED) Figure 2-31. Mounting Octopus Cable on Fanning Strip 2-72

INSTALLATION Make SIP Connections to Cabinet for 7300H Series Terminals 1. 2. 3. 4. 5. 6. 7. 8. 9. Select the cable label sheet (Figure 2-7) that identifies the cabinet (blue for #1, orange for #2, and green for #3). On an octopus cable, attach an appropriate label (CAB1 SLOT8, for example) on the l...

INSTALLATION Make SIP Connections to Cabinet for MET Sets Follow the same procedure as for 7300H Series terminals to connect MET set SIP appearances to the appropriate CPs as outlined below: ● ● ● ● ● Note: Connect the 25-pair connector to a TN735 CP Attach a cable label to the octopus cable 25-pair...

INSTALLATION Make SIP Connections for Data Terminals and Computers Any RS-232C compatible data terminal, personal computer host computer, ora STAR LAN NETWORK workstation can be connected in one of four ways: ● If the terminal has a modem, it should be connected to a ZTN78 CP in the same way as a si...

INSTALLATION 6. Check that all cables are labeled. INSTALL EMERGENCY TRANSFER UNITS (ETUs) The 106 Emergency Transfer Unit (ETU) (Figure 2-32) supports up to five Power Failure Transfer (PFT) sets and a DID make-busy function. Up to fourETUs can be supported for a maximum of 20 PFT sets. The sets ca...

INSTALLATION Make Emergency Transfer Connections Note: The following procedure assumes that the network interfaces 1. 2. 3. 4. 5. 6. 7. are connected to the 700A jacks and connector 0 of the 3:1splitter cables has been connected to the jack. See Install Equipment Room Trunk Cabling in this part. Con...

INSTALLATION Install Ground-Start Key If trunks are ground start (ZTN76 used), a ground-start key must be installed on the Power Failure Transfer voice terminals. This key can only be installed on voice terminals that have modular jacks. 1. Unplug modular line cord from voice terminal. 2.Plug KS2356...

INSTALLATION INSTALL ATTENDANT CONSOLE Most systems will have one or two attendant consoles. Release 2 Version 1 and Release 3 systems support direct trunk attendant consoles (DTAC) orswitched loop attendant consoles (SLAC). The system can support either one or two of the DTAC or SLAC consoles but n...

INSTALLATION INSTALL TERMINALS When installing terminals at workstations, consult the Voice and Data Station Records Form to make sure that you are connecting the right terminal type at each workstation. In a replacement installation, single-line and MET voice terminals already in place may not need...

I N S T A L L A T I O N Label Terminals Be sure to label the feature buttons of 7300H Series voice terminalsreplace labels on MET sets per Table 2-F. Table 2-F. Feature Button Abbreviations and Labels F e a t u r e N a m e Administration Button Button Code Label [ ]* Account Code Entry 15 ACCT ENTRY...

INSTALLATION Table 2-F. Feature Button Abbreviations and Labels (Contd.) * [ ] Indicates that a meaningful value for this item should be substituted. † These features cannot be changed or reassigned. Att.-Attendant Console November 1995 2-89

INSTALLATION Stand-Alone Voice Terminals See Figure 2-37. 1. Unpack each terminal and examine it for damage. On Model 420 voice terminals, set the TONE/PULSE switch to TONE. 2. At the workstation, connect one end of the terminal line cord to the terminal and the other end to the modular wall jack. L...

INSTALLATION Stand-Alone Remotely Powered Voice Terminals See Figure 2-38. 1. Unpack each terminal and examine it for damage. 2. At the workstation, connect one end of the terminal line cord to the terminal and the other end to the modular wall jack. LEGEND : ZTN79 - B1 -c l -C2 -C7 -P2 - P1 - W1 - ...

LEGEND: ZTN79 -TN726 - WP90851-L1 - B1 -C1 - C2 -P1 - W1 - Z3A5 ADU - HYBRID LINE CP Figure D A T A L I N E C P MODULAR Y ADAPTER TYPICAL -103A CONNECTING BLOCK MODULAR CORD (D8W-87) OCTOPUS CABLE (WP90780)KS22911 POWER SUPPLY INSIDE WIRING CABLEEQUIPPED WITH A 3 FOOT PLUG-ENDED EIA CORD 7300H SERIE...

INSTALLATION Stand-Alone Data Terminals Data terminals and computers may be connected to the system through ADUs or a Multiple Asynchronous Data Unit (MADU) without being linked to a voice terminal. Depending on the data terminal that they connect to, some ADUs may need supplementary power for prope...

INSTALLATION MADU Connections The MADU provides a direct connection to a host computer or a large groupof data terminals (64 maximum). See Figure 2-44. The MADU has eight portconnectors; each port is equivalent to a single ADU. Complete installation instructions for the MADU are contained in the MAD...

INSTALLATION INSTALL CUSTOMER’S SAT The SAT can be connected through the SIP to the CPU/Memory CP by any one of the following methods: l On-premises nonswitched connection (no ADU required if the SAT is plugged into the system AC outlet) l On-premises switched connection l Off-premises nonswitched c...

Nonswitched See Figure 2-46. Connection of Equipment Note: Figure 2-46 shows an Z210A1 SIP Adapter to provide the building wiring termination. An 858A Adapter can also be 1. 2. 3. 4. 5 . 6 . 7 . 8. 9 . 10. used. Connect the RS-232C plug on the peripheral 232C port on a Z3A1 or Z3A4 ADU. A l w a y s ...

INSTALLATION LEGEND : B1 – T Y P I C A L - 103A CONNECTING BLOCK C1 -MODULAR CORD (D8W-87)C2 -OCTOPUS CABLE (WP90780)C3-EIA CROSSOVER CABLE (P17U-87)C4 -MODULAR RECEPTACLE TO MODULAR PLUG ADU CROSSOVER (D8AM-87)C7-MODULAR POWER CORD (D6AP-87) W1 -INSIDE BUILDING WIRING CABLE248B ADAPTER-ALLOWS MODUL...

INSTALLATION On-Premises Digital Switched Connection To access a CPU/Memory port through a switched connection, the port isconnected to a port on a TN726 CP and assigned a Data Dial Code (DDC). See Figure 2-47. The peripheral equipment can be either stand-alone or associated with a voice terminal. T...

INSTALLATION O f f - P r e m i s e s N o n s w i t c h e d C o n n e c t i o n Off-premises peripheral equipment must be equipped with an originating modem (see Figure 2-48). The connection is made from the CO through the TAE to a dedicated modem (optioned for autoanswer) connected to the appropriat...

INSTALLATION S Y S T E M 2 5 C A B I N E T P A R T O F O C T O P U S C A B L E CO OR PROVATE LINE CIRCUIT P A R T O F S I P C O N N E C T V I A T A E Z T N 1 2 8 O R Z T N 1 3 0 Z 2 1 0 A 2 A D A P T . T Y P I C A L M O D E M T E L C O C E N T R A L O F F I C E 3 5 5 A F * P E R P P H E R A L E Q U ...

INSTALLATION INSTALL CUSTOMER’S DTU The DTU must be directly connected to Port #3 on the CPU/Memory CP(Figures 2-45 and 2-46). Remote and switched connections are not supported. Follow the procedures provided for installing the SAT. INSTALL STATION MESSAGE DIGITALRECORDING (SMDR) EQUIPMENT The SMDR ...

INSTALLATION INSTALL STARLAN NETWORK INTERFACE Note: Support for the STARLAN Interface has been discontinued. The ZTN84 STARLAN Interface CP provides an interface between the System 25 TDM bus and a STARLAN NETWORK local area network (LAN). An octopus cable connects the ZTN84 CP to a Networkon the S...

I N S T A L L A T I O N Shared System 25 Voice/STARLAN NETWORK Data Connections STARLAN NETWORK workstations can share the 4-pair System 25 wiring to the SIP with an analog or 7300H Series voice terminal. The STARLAN NETWORK data is transmitted over pairs two and three. At the SIP, the data pairs an...

INSTALLATION 73001H Series Voice Terminals See Figure 2-51. 1. 2. 3. 4. 5. 6. 7. Unpack each terminal and examine it for damage. At the workstation, use a D8W-87 modular cord to connect the NAU jack on the KS-23475, L1 Adapter to the OUT jack on the NAU. Using a D8W-87 modular cord, connect the PHON...

INSTALLATION INSTALL MUSIC-ON-HOLD INTERFACE Note: Use of equipment that rebroadcasts copyrighted music or other material may be required to obtain a license from a third party such as ASCAP or BMI. FCC-Registered Music Source Interface The music source is connected to a ZTN78 CP through the SIP (se...

INSTALLATION Non-FCC Registered Music Source Interface The music source is connected to a ZTN78 CP (see Figure 2-53). Connectthe CP to a 858A Adapter at the SIP. Follow the instructions for installing FCC-registered equipment. You mustalso install a kit-of-parts (D-181575; includes 36A Voice Coupler...

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INSTALLATION INSTALL EXTERNAL ALERTS E x t e r n a l 5 4 ) . 1. 2. 3. alerts are connected to the system through a ZTN78 CP (Figure 2- Connect the CP to a 858A Adapter at the SIP. Connect the other side of the adapter to a 103A Connecting Block using building wiring. Connect the block and alerting d...

INSTALLATION Direct Connection to TN763 Auxiliary Trunk CP Paging ( F i g u r e ● ● equipment can be connected directly to a TN763 Auxiliary Trunk CP 2-55) when the following conditions exist: Paging equipment is FCC registered. Paging equipment requires a contact closure Connect as shown in Figure ...

INSTALLATION S Y S T E M 2 5 C A B I N E T P A R T O F 2 5 P A I R C A B L E P A R T O F 6 6 - B L O C K A W 1 C 5 T N 7 6 3 B 1 < P A G I N G O R D I C T A T I O N S Y S T E M LEGEND : T N 7 6 3 – A U X I L I A R Y T R U N K C P A – SINGLE-ENDED 25 PAIR CONNECTOR CABLE (A25D) B1 - T Y P I C A L ...

INSTALLATION Connection to TN763 Auxiliary Trunk CP (278A Adapter Required) A 278A Adapter is required to connect paging equipment to a TN763 Auxiliary Trunk CP (Figure 2-56) when the following conditions l Paging equipment is not FCC registered. l Paging equipment requires a contact closure Connect...

SYSTEM TESTS SYSTEM TESTS Once installation is completed, the system must be initialized, following theprocedures in the AT&T System 25 Administration Manual (555-540-500). When this has been done, the system is ready for acceptance testing. Youshould test all trunks, voice terminals, data termi...

SYSTEM TESTS 4. Repeat Steps 1 through 3 for all incoming tie trunks, and make sure each tie trunk is tested. TEST 7300H SERIES VOICE TERMINALS Test each 7300H Series terminal using the terminal’s test switch, by placingboth station-to-station and external calls, and by using the feature buttons. 1....

SYSTEM TESTS TEST SINGLE-LINE VOICE TERMINALS Test each single-line voice terminal by placing station-to-station and external c a l l s . 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. At the test terminal, go off-hook. — You should hear system dial tone. Dial the PDC of another working terminal. A t A t A t Yo...

SYSTEM TESTS TEST ATL CORDLESS TELEPHONE The ATL Cordless Telephone must be tested to seeThe transmission quality must be verified when the separated by the maximum operating distance. if it functions properly. base and handset are Use the documentation provided with the ATL Cordless Telephone to pe...

SYSTEM TESTS 2. 3. 4. 5. 6. At any multiline voice terminal, go off-hook, dial the ARS access code,and dial one of the long-distance numbers. Make sure that the call is completed before going on-hook. Repeat Step 2 if additional long-distance numbers must be called. At the SMDR printer (or SAT), ver...

SYSTEM TESTS TEST DATA TERMINAL DIALING FEATURE Perform this test on all data terminals and personal computers connected to the system through ADUs. 1. 2. 3. 4. 5. 6. 7. Make sure the test terminal is on. Press <BREAK> <RETURN>. The command mode menu is displayed. (The command mode menu ...

SYSTEM TESTS MAKE POOLED MODEM TEST CALL Skip this test if the system does not include a TN758 Pooled Modem CP. This test involves placing a data call from a data terminal connected throughan ADU from a data terminal or personal computer connected via a modem(the modem may be part of a terminal conn...

SYSTEM TEST TESTS MUSIC-ON-HOLD Verify that music is provided to outside callers placed on hold. (Inside callers do not receive Music-on-Hold [MOH].) 1. 2. 3. 4. 5. At any working voice terminal, go off-hook. Dial the CO trunk access code and the system’s listed directory number, or if DID, dial any...

SYSTEM TESTS TEST EMERGENCY TRANSFER Place the system in emergency transfer mode by turning power off (or remove the modular connector from the ETU). Place an outside call from each emergency transfer station. 1. 2. 3. 4. 5. 6. 7. 8. At Cabinet 1, turn the power off using the rocker switch on the ba...

SYSTEM TESTS TEST TOUCH-TONE RECEIVERS 1. 2. 3. At a single-line voice terminal, go off-hook. Dial *3 and the 2-digit number (01 through 12) of the touch-tone receiver to be tested.Receivers 01 through 04 are on the ZTN85 or ZTN131 (R3) CP.Receivers 05 through 12 are only present if your system has ...

MAINTENANCE EQUIPMENT NEEDED The any maintenance technician System 25 service call: should take the following tools and equipment on EIA breakout box Digital voltmeter (KS-20599 or equivalent) 11 O/66-type punchdown tool (AT 8762D or equivalent) Dracon TS21 or equivalent touch-tone test set Assorted...

MAINTENANCE Precautions Electromagnetic fields radiating from the system cabinets may generate noise in other communications equipment. The technician must be sure that allcabinet panels and covers are securely in place after performing maintenance. C a u t i o n : Electrostatic discharge can destro...

MAINTENANCE GENERAL MAINTENANCE INFORMATION System Errors and Alarms During periodic testing, a maintenance audit could detect a system error that automatically generates an error record. Depending on severity, the error record is stored in one of following three tables in the Error Log: ● Permanent...

MAINTENANCE Attendant Console LED A lighted green Alarm LED on the console indicates the presence of a Permanent System Alarm. The LED flashes with each new alarm. The attendant can press the associated button to cause the LED to light steadily. A lighted redAlarm LED indicates a barrier code violat...

MAINTENANCE MAINTENANCE STRATEGY Fault isolation is the cornerstone of the System 25 maintenance strategy.Maintenance activity isolates faults to one (or more) repairable or replaceable maintenance units. Equipment should be tested in the following order: 1. 2. 3. 4. 5. 6. Terminal equipment Station...

MAINTENANCE Sometimes, faults recorded in the error log and user-reported troubles will exist at the same time. The logged faults should always be cleared first, if possible. This procedure often clears the user-reported troubles without anyadditional maintenance. Clearing the most serious logged fa...

MAINTENANCE Common Control Problems Common Control circuitry is difficult to troubleshoot. The system must be powered down before any of these CPs are replaced. Before powering thesystem down, save translations to tape (see “Using the Digital Tape Unit”).Other repair procedures may also require the ...

MAINTENANCE Station, Wiring, and Trunk Problems If the system indicates that a fault is with a station, or if a user complaint indicates a station problem, the trouble must be isolated to the station itself or to the wiring between the cabinet or station interconnect panel and the s t a t i o n . Th...

MAINTENANCE USING THE DIGITAL TAPE UNIT The Model DC4 Digital Tape Unit (DTU) or equivalent is extremely important in system maintenance. System Translations are stored in the DTU and canbe accessed in the unlikely event that translations are lost during a system f a i l u r e . This section covers ...

4. Press the REWIND button, and wait for the unit to tape. This step ensures that the tape is played from Note: The system automatically compensates for “leader” material at the beginning and end of the Saving Translations Follow these steps to save 1. 2. 3. 4. 5. 6. 7. 8. translations on tape: MAIN...

MAINTENANCE 9. 10. Press c to continue, and the tape unit is automatically started by the system. Saving translations on tape takes about 5 minutes and doesnot affect switch performance. When the save is complete, the unit stops automatically. If the save is successful, the SAT displays: SAVE COMPLE...

MAINTENANCE Restoring Translations N o t e : Restoring translations from tape removes the system from operation for about 5 minutes. When it is necessary to restore system translations from tape, follow these steps: 1. 2. 3. 4. 5. 6. 7. Complete the steps under “Setting up the DTU,” using the casset...

MAINTENANCE ROUTINE MAINTENANCE The following are general trouble-clearing techniques usually required to resolve system-detected and/or user-detected troubles. ● Reseating and Replacing Circuit Packs ● Removing and Restoring Power ● Restarting the System. Reseating and Replacing Circuit Packs Excep...

MAINTENANCE Removing and Restoring Power When the following procedures are performed, the system must be unplugged from the ac power source: ● ● ● ● Reseating or replacing the Service Circuit or CPU/Memory CPs Replacing the frontplane ribbon connector between the Call Processor and Memory CPs (Relea...

MAINTENANCE Restarting the System The system automatically warm starts after power is restored. (The system’s maintenance software may restart the system under certain self-detectederror conditions. ) There are two types of restart: cold and warm. A Cold Start and limited cold start (which takes abo...

MAINTENANCE The SAT message for a cold restart appears after the system has performedall self-tests and reading of its configuration. The time required for a coldstart depends on the number of CPs in the system but is generally several minutes. A typical Release 2 cold restart SAT message is as foll...

MAINTENANCE ERROR LOG When a system maintenance object fails periodic testing, the systemautomatically generates an error record. Depending on severity, the record isstored in one of three tables in the Error Log. The Error Log contains thefollowing three error tables: ● P e r m a n e n t S y s t e ...

MAINTENANCE The Error Log is under the control of internal background maintenance software that automatically escalates an error to a more serious category or retires it. The system tests itself after a repair has been made. If the error condition is corrected, the error may be removed from the Erro...

MAINTENANCE ERROR MESSAGES Error messages, along with the alarm indicators, are the most likely indicators that an error has occurred in the system. When a maintenanceobject fails periodic testing, the system automatically generates an errorrecord. The error record (log) is accessible through the SA...

MAINTENANCE ERROR MESSAGE AND DESCRIPTION POSSIBLE SOLUTION Invalid Message Length: The port If the problem persists, check or CP sent an up-link message that replace the port CP. is not in the expected message set. Invalid Port Board: (Other than Remove or replace CP with a CPU or Memory) Port CP n...

MAINTENANCE ERROR MESSAGE AND DESCRIPTION POSSIBLE SOLUTION Memory Management Error: B u s Possible s o f t w a r e e r r o r . If error that occurs while accessing p r o b l e m persists, c h e c k o r the “other than protected” RAM. r e p l a c e C P U / M e m o r y C P . A A warm start is logged ...

MAINTENANCE ERROR MESSAGE AND DESCRIPTION POSSIBLE SOLUTION R e c e i v e d I n c o r r e c t N u m b e r o f DID Digits: This error indicates that the CO is set up to send a number of DID digits different from what the switch has been administered to receive. Ensure that trunks are properly transla...

MAINTENANCE Figure 4-2. Clearing Supply Troubles (Sheet 1 of 2) 4-47

MAINTENANCE NOTES : 1. PC should be running NAUCOM, Session, CAM and/or any STARLAN NETWORK compatible emulating p r o g r a m . 2. The green LED lights when the STARLAN CP passes power up. Figure 4-5. Clearing STARLAN Interface Troubles

Figure 4-6. Clearing Tie Trunk Troubles (Sheet 1 of 5) 4-55

MAINTENANCE After total failure, the system ceases to operate and the green LED on theCPU/Memory CP may not flash. Failure can also be verified by checking the LEDS on each CP. If either a partial or total Common Control failure is detected, remove and then restore system power. This procedure force...

MAINTENANCE Table 4-C. Circuit Pack Voltage–Symptoms Voltage/ +5 volts -5 volts -48 Volts Circuit Pack (Notes) No+5 V No-5 V No-48 V Call Proc. (ZTN82, x System Failure x EIA Failure x ETU Activated ZTN1 28) for RI Memory (ZTN81, x System Failure - - - - ZTN1 27) for RI CPU/Memory (ZTN129, x System ...

MAINTENANCE Each power supply has one green LED on its front that can be seen through the fan assembly. The LED is visible through the ventilation slots on the front cover, but the cover must be removed for diagnostic and service purposes. This LED is always lighted when the system is receiving 5.1 ...

MAINTENANCE Power Supply Protection Power supply outputs are protected from damage when they are subjected to either momentary or sustained short circuits. “Shutdown” current protection is provided at 125 percent (plus or minus 5 percent) of full load for each dc output. Current foldback is provided...

MAINTENANCE Power Supply Replacement To replace the power supply, follow these steps: D a n g e r : Hazardous voltages are present on some backplane 1. 2. 3. 4. 5. 6. 7. 8. pins. Unplug power cord from the outlet, and wait atleast 5 minutes before removing rear cover or powersupply. Remove the front...

MAINTENANCE Fan Assembly Trouble The fans should always be operating when the system is receiving ac powerand the cabinet switch is turned on. If the fans are not operating, be sure that the system is receiving ac power. if the system is receiving power and the fans are still not operating, the ac p...

MAINTENANCE TEST POINT CABLE CONNECTS I HERE. ACCESS VOLTAGE TEST ADDRESS PLUG POSITION POINTS FROM FRONT OF (SLOT 08 NOT USED) C A B I N E T . Figure 4-9. System Cabinet Backplane Wiring Side (Sheet 1 of 2) 4-73

MAINTENANCE CLEARING USER-DETECTED TROUBLES User-reported troubles are usually associated with voice or data terminal equipment or trunks. They can result from system-detected errors and areoften solved by clearing system error conditions or alarms. This section presents trouble-clearing techniques ...

MAINTENANCE 2. 3. 4. If you hear dial tone, continue with this test. D i a l t h e d i g i t s 1 2 3 4 5 6 7 8 9 0 * # . Y OU should hear a DTMF signal as each key is pressed. If the test passes, you will hear dial tone within 1 to 3 seconds after you enter #. Repeat the test for each touch-tone rec...

MAINTENANCE P r o c e d u r e s : 1. Make sure that the appropriate ZTN79 CP is translated. 2. Check for the presence of -48 volts at test point on front of cabinet. Symptoms: Inoperative u s e d . P r o c e d u r e s : 1. If LOCAL display-equipped voice terminal when LOCAL button is button/lamp act...

MAINTENANCE Trunk Troubles Many trunk troubles originate in the central office (CO) facilities. The first step in identifying trunk troubles should be to check for presence of dial tone at the Trunk Access Equipment (TAE). If required, check the Error Log records, and make a trunk test call. Note th...

MAINTENANCE 6. If “no loop current on outgoing call” is displayed, either of the above conditions could be true. It is more likely, however, that the facility is d o w n . 7. Place an outside call on the line using the trunk test call procedures listed in outgoing Trunk Problems. If you get fast bus...

MAINTENANCE 8. 9. 10. 11. 12. If the problem does not move, replace the Ground Start CP. If the problem moves, the fault is with the CO. Notify CO personnel through the proper channels. If “Ringing no ground” is displayed, the T and R leads may be reversed in the trunk access wiring. The T lead shou...

MAINTENANCE Special Port Circuit Options for Stations and Trunks Tables 4-E and 4-F provide the special port circuit options that are administered in the system. System defaults and associated action codes applicable to thevarious port CPS are also shown. Procedures are available in the Administrati...

MAINTENANCE Multiple Troubles or Trouble That Cannot Be Diagnosed Symptoms: Red LED is lighted on all port CPs. SAT displays this message: “ F A I L : C P U : A R C H A N G E L INSANE: C H E C K Z T N 8 5 : T E R M I N A T O R ? ” . P r o c e d u r e s : 1. 2. 3. 4. 5. Check that the TDM bus termina...

REFERENCES An Introduction to AT&T System 25 Provides an introduction to System 25 features and services. The emphasis is on how System 25 helps solve information management, productivity, and cost control problems. Implementation Manual Describes how to plan the system’s operating configuration...

REFERENCES Reference Manual This document is the system’s principal technical reference. It provides reference material for sales support, system configuration and operation, and for the system technician. It contains a comprehensive description of the system, emphasizing features, components and ov...

REFERENCES Call Management System—System Manual Provides information necessary to install CMS software, administer, use, and t r o u b l e s h o o t C M S . Call Management System—lnstallation Guide Provides instructions for inserting the CMS interface card into the PC. Call Management System—Planni...

ABBREVIATIONS AND ACRONYMS ABBREVIATIONS AND ACRONYMS ADU AE ARSASCII BPS CCSCCSA COSCSU DCE DDCDDD DIDDGCDS1DTAC DTEDTMF DXS EIAETU FNPA FRL FX HNPA Asynchronous Data Unit Account ExecutiveAutomatic Route SelectionAmerican Standard Code for Information Interchange Bits Per Second Hundred Call Secon...

APPENDIX A: APPENDIX A: System Wiring Tables Connector Pin Assignments Table A-A lists the lead designations and pin assignments at the 25-pairconnectors on the system cabinets. System 25 Building Wiring Table A-B lists the 25-pair and 4-pair cable color codes, voice and data terminal lead designati...

APPENDIX A: System Wiring Tables Table A-B. Building Wiring 25-Pair Cable 4-Pair Cable Term. Lead Functions 5 0 0 ATL 7 1 0 1 A Cordless D-Inside D-Inside C a b l e Conn. C a b l e Conn. C k t . 2 5 0 0 7300H RS-232C C o l o r P i n Color Block No. Series S e r i e s Term , c o d e Num. code Term. 1...

APPENDIX B: APPENDIX B: Parts Listing The following information may assist you in cross-referencing Apparatus Codes, Comcodes and Price Element Codes (PECs). D E S C R l P T I 0 N PEC APPARATUS CODE COMCODE Cabinets System 25 Control Unit (R3V2) 6250-031 includes Carrier J58901 A2 L-1 5 (e/w) Power ...

APPENDIX B: Parts Listing DESCRIPTlON PEC APPARATUS CODE COMCODE Asynchronous Data Units ATL ADU 62506 D181521 includes 105105506 D8W-87 Cord (14ft) 103786802 Z3A5 ATL ADU 103975349 M o d / R S - 2 3 2 C ( M ) A D U 2169-001 Z3A1 103963963 Mod/RS-232C (F) ADU 2169-004 Z3A4 103964185 ADU Aux Power 21...

APPENDIX B: Parts Listing DESCRIPTlON PEC APPARATUS CODE COMCODE Cross-Connect Hardware Station interface Panel 2 7 5 0 - D 2 8 6 1 7 A 1 0 3 9 8 2 6 5 8 Mod/Mod Adapter 2 7 5 0 - D 2 7 Z 2 1 0 A 2 1 0 6 3 0 8 8 6 9 Mod/l 10 Adapter 2 7 5 0 - D 2 9 8 5 8 A 4 0 5 1 7 7 7 9 1 Voice/Data (Y) Adapter 2 ...

APPENDIX C: APPENDIX C: System Additions or Changes Additions and changes can be made to the system to support growth or changing needs of the customer. These system changes include: adding voice or data terminals, changing a voice-only connection to a voice/dataconnection, adding trunks, adding mod...

APPENDIX C: System Additions or Changes Table C-A. Unit Loads Port Type I Unit Load ZTN178 port I 0.5 TN742, TN746 1.0 port ETU 2.0 TN760B Port 2.0 TN753B Port 0.5 502-type Headset .75 Adapter 5-Button 1.0 Terminals Port Type Unit Load 10- and 34-Button 1.25 Terminals HFAI Terminals 1.5 MET Terminal...

APPENDIX C: System Additions or Changes 5. Insert the CP into the slot with the latch lever opened. Push it in firmly until you feel resistance and the latch lever moves toward its vertical position, flush with the edge of the CP. Push the lever all the vvay to vertical until the latch pin engages. ...

APPENDIX C: System Additions or Changes Set Option Switches on TN760B CP If the CP being added is a TN760B, use Figure C-2 and Table C-B to choose Figure C-2. Tie Trunk (TN760B) Circuit Pack Option Switches C-5

APPENDIX C: System Additions or Changes Replace Circuit Pack Replace a CP if it fails or becomes damaged. 1. 2. 3. 4. 5. 6. Make sure that your hands are clean and dry. Put on a wrist grounding strap, and clip it to the grounding block at the back of the c a b i n e t . With your thumb, pull up on t...

APPENDIX C: System Additions or Changes Add Cabinet Add a cabinet if all the slots in the existing cabinets are full and you need to add a CP. Also, if the addition of a CP to a cabinet will cause the unit load to exceed 80, a cabinet must be added. The system can support a maximum ofthree cabinets....

APPENDIX C: System Additions or Changes Add Terminal 1. 2. 3. 4. 5. 6. Evaluate the cabinet unit power load using the procedures under “Evaluate cabinet unit Power Load” in this appendix. Check for available ports on checking the octopus cablesthe back of the cabinet. a compatible CP using the SAT o...

APPENDIX C: System Additions or Changes 9. When the terminal is initialized, test it following the appropriate procedures in Section 3, “System Tests. ” Add Pooled Modem Circuit Pack 1. 2. 3. 4. Select a cabinet in which to add the TN758 Pooled Modem CP. Only two Pooled Modem CPs per cabinet are all...

APPENDIX D: APPENDIX D: System Upgrades A D-kit-of-parts (PEC 62526N) k required to upgrade a Release 1 or a Release 2 system to a Release 3 V3 system. The kit contains the following: ● ZTN142 CPU/Memory Circuit Pack(1) ● ZTN131 Service Circuit Pack (1) ● Switched Loop Attendant Console (SLAC) Face ...

APPENDIX E: APPENDIX E: Administration Codes and Data The tables in this appendix are intended to help those familiar with system administration locate specific information without having to refer to the full text in the Administration Manual. Default values, if applicable, are indicated in bold pri...

APPENDIX E: Administration Codes and Data Table E-D. Feature Button Translation (Menu=1/2) (Contd) "Action=100" is required before action(s) 101-104 listed in this table are administered ‘ Refer to page 10-6 of the Administration Manual. November 1995 E-15

APPENDIX E: Administration Codes and Data Table E-M. Port Administration, Trunks (Menu=1) ACTION DESCRIPTION DATA 0 Physical port number CSSPP 1 Enter trunk port type code [See Table E-N] 2 Enter trunk number [0001 -9999; 0001-0104] 3 Assign class-of-service code [(DID–1-4; 3) (All other— See Table ...

APPENDIX E: Administration Codes and Data Table E-P. Port Administration, Auxiliary Equipment (Menu-1 ) (Contd) ACTION DESCRIPTlON DATA 1 Assign voice Messaging Service port [260 - 263] type: 260 = standard voice mail services 261 = call coverage/auto-attendant 262 = message drop 263 = bulletin boar...

APPENDIX E: Administration Codes and Data Table E-Q. Special Feature Port Type Codes This table shows data values associated with Action=1 on Table E-P. F e a t u r e T N 7 4 2 ,Z T N 7 8 T N 7 6 3 Z T N 7 6 Z T N 7 7 T N 7 4 8 T N 7 5 8 Z T N 7 9 T o n e D e t e c t o r E x t e r n a l A l e r t 1s...

APPENDIX F: Administration Error Messages APPENDIX F shows Basic Administration error codes and descriptions. The Advanced Administration system uses different terminology. For additional details about an error message in Basic Administration, press the “?” key. The following table lists and describ...

GLOSSARY GLOSSARY The following is a list of definitions of terms used in System 25 d o c u m e n t a t i o n . A d m i n i s t e r To access and change the parameters associated with the servicesor features of the system. Analog Data Endpoint Data endpoints connected to the system by (built-in or s...

A t t e n d a n t The operator of the attendant console. Attendant Console ● Direct Trunk Console: An electronic call-handling position with pushbutton control. Used by attendants to answer and place calls and to manage and monitor some system operations. ● Direct Extension Selector (DXS) Console: P...

Loop-Start Trunk M o d e m Modem Simplest type of central office (CO) trunk. Calls are originated byproviding a dc path between the tip and ring leads. The CO detects the loop current thus drawn and returns dial tone. Incoming calls are signaled by the CO placing an ac ringing voltage between the ti...

INDEX INDEX 617A P a n e l s 2 - 6 617A Panels I n s t a l l 2 - 4 4 7300H Series T e r m i n a l s 2 - 7 3 Voice Terminal Tests 3-3 7300H Series Voice Terminal T e s t s 3 - 3 A Abbreviations 6-1 A c r o n y m s 6 - 1 Adapters D e s c r i p t i o n 2 - 8 I n s t a l l 2 - 4 7R S - 2 3 2 C B - 9 Add...