Att System 25 Manuel d'utilisateur Page 237
- Page / 438
- Table des matières
- MARQUE LIVRES
Noté. / 5. Basé sur avis des utilisateurs
MAINTENANCE
Clearing System-Detected Troubles
Most troubles are detected through the Alarm LED located on the Attendant
Console, the Error Log, and, in some cases, the LEDs on the circuit packs
(CPs). The following is a list of system troubles. Each item in the list is
described in this section.
Complete System Failure
Common Control Trouble
Circuit Pack Trouble
Frontplane Ribbon Connector Trouble (Release 1 Only)
Power Supply Trouble
Fan Assembly Trouble
Overheating Trouble
Backplane and Cabinet Trouble
Emergency Transfer Unit Trouble.
Complete System Failure
A complete system failure is caused by a catastrophic failure in the Common
Control circuitry, the power supply, the backplane, or the cabinet. Refer to
the relevant procedures below in the event of such a failure. Complete
system failures are rare; most failures are of a noncritical component, such
as a port on a CP.
Common Control Trouble
Failure of a the Common Control CP (that is, CPU/Memory or Service Circuit)
is critical and requires replacement of the faulty pack(s). Failure of these CPs
can affect the entire system and may cause the Emergency Transfer Unit
(ETU) to activate.
4-61
- AT&T 1
- CUSTOMER WARNING 3
- SERVICE TECHNICIAN WARNING 3
- APPEAR ON THE EQUIPMENT 4
- AT&T SYSTEM 25 5
- MEANS OF CONNECTION 5
- REPAIR INSTRUCTIONS 6
- HEARING AID COMPATIBILITY 7
- FCC INFORMATION 7
- FCC WARNING STATEMENT 8
- Contents 11
- SYSTEM TESTS 14
- MAINTENANCE 15
- GLOSSARY 18
- INTRODUCTION 23
- FCC PRECAUTIONS 24
- Tasks Tools Required 26
- Recommended Type 26
- ● Station Interconnect Panel 27
- ● Cables 27
- Access Equipment 28
- 617A Panel 30
- MOUNTING CENTERS 31
- WHEN FLANGES ARE 31
- OVERLAPPED 31
- Figure 2-2. 617A Panel 31
- Adapters 32
- Fanning Strip 34
- Splitter Cables 35
- Octopus Cables 36
- 8536 Adapter Cable 36
- Connector Cables 36
- Cabinet No 37
- CABLE LABELS 38
- Symbols Used in Figures 39
- PREINSTALLATION REQUIREMENTS 40
- ACCESS AREA 41
- (NOTE 5) 41
- AC Power 42
- Grounding 42
- Lightning Protection 43
- Secondary Protection 45
- INSTALL SYSTEM CABINETS 47
- Position Cabinet(s) 47
- Cabinet Contents 47
- Figure 2-10 50
- Figure 2-11 51
- Install 4A Retainer Clips 53
- Connect Cabinets 54
- Connect Power 57
- Cold Start the System 59
- Circuit Pack Type 64
- LEDs if Normal 64
- LEDs if Failed 64
- Report Problems 66
- Initialize System 67
- Figure 2-16 69
- SIP and TAE Backboard Layout 69
- Mount 858A or 2210A2 Adapters 71
- (Optimal) 73
- Stations 75
- Install Emergency 75
- Transfer Units (HUS) 75
- Connect Tie Trunks 76
- Install 77
- TRUNK CIRCUIT PACK 78
- DS1 interface is in most 80
- Customer Service 81
- Unit (CSU) 81
- TRUNK CIRCUIT PACK 82
- Modular Plug Termination 86
- Wiring Block 88
- DIW Cable 88
- Color Code 88
- Figure 2-28 89
- Circuit Pack Terminal Type 90
- Using 24 AWG Wire 90
- Figure 2-30 94
- Figure 2-31 96
- Perform SIP Housekeeping 101
- INSTALLATION 103
- Figure 2-32 103
- 10B Emergency Transfer Unit 103
- Figure 2-33 104
- Connect ETU to SIP 105
- Install Ground-Start Key 107
- INSTALL ATTENDANT CONSOLE 108
- Figure 2-35 109
- Figure 2-36 111
- INSTALL TERMINALS 112
- Label Terminals 113
- Feature Name 113
- Administration Button 113
- Button Code Label [ ]* 113
- Stand-Alone Voice Terminals 115
- Associated ADUs 117
- Figure 2-39 118
- WP90851-L1 119
- ATL Cordless Telephone 119
- (TN742 120
- TN746B in R3V2) 120
- Off-Premises-DS1 Interface 121
- Figure 2-41 122
- Stand-Alone Data Terminals 123
- LEGEND : 124
- MADU Connections 126
- INSTALL CUSTOMER’S SAT 127
- AC Outlet 127
- Nonswitched 129
- Connection of Equipment 129
- Figure 2-48 135
- INSTALL CUSTOMER’S DTU 136
- RECORDING (SMDR) EQUIPMENT 136
- ZTN84 - STARLAN INTERFACE CP 137
- - OCTOPUS CABLE ( WP90780 ) 137
- NEU - NETWORK EXPANSION UNIT 137
- Connections 138
- Series Voice Terminals 140
- Figure 2-53a. Music-on-Hold 145
- November 1995 145
- INSTALL EXTERNAL ALERTS 147
- 66-Block Term.* 103A Term 149
- Required) 151
- Pack to Paging System 156
- TEST OUTGOING TRUNKS 161
- TEST DS1 INTERFACE 161
- TEST INCOMING DID TRUNKS 162
- TEST INCOMING TIE TRUNKS 162
- TEST ATL 166
- CORDLESS TELEPHONE 166
- TEST DIAL ACCESS CODES 166
- TEST SYSTEM FEATURES 166
- ARS and SMDR Tests 166
- Access Test 167
- System Speed Dialing Test 167
- PDC Login 168
- Call Coverage Test 168
- TEST ATTENDANT CONSOLE 169
- TEST SELECTOR CONSOLE 169
- MAKE POOLED MODEM TEST CALL 171
- TEST TRANSFER TO DATA 171
- TEST DICTATION SYSTEM ACCESS 173
- TEST PAGING INTERFACE 173
- MUSIC-ON-HOLD 174
- TEST EMERGENCY TRANSFER 175
- TEST TOUCH-TONE RECEIVERS 176
- EQUIPMENT NEEDED 178
- Precautions 179
- MAINTENANCE INFORMATION 180
- System Errors and Alarms 180
- Emergency Transfer 180
- Circuit Pack LEDs 180
- Description 182
- MAINTENANCE STRATEGY 185
- Total System Failures 187
- Port Problems 187
- Common Control Problems 188
- Automatic Maintenance Tests 189
- Maintenance Failure 189
- USING THE 190
- DIGITAL TAPE UNIT 190
- Setting Up the DTU 190
- Saving Translations 191
- Verifying Translations 192
- Restoring Translations 194
- ROUTINE MAINTENANCE 196
- Removing and 198
- Restoring Power 198
- Restarting the System 199
- <RETURN>. The 202
- ERROR LOG 203
- 8. The SAT displays: 206
- ERROR MESSAGES 208
- Invalid Port Board: 215
- Protocol Error: 215
- Memory Management Corruption: 215
- Memory Management Error: Bus 216
- Received Incorrect Number of 219
- DID Digits: 219
- RIMS Insane: 219
- Service Circuit In Mismatched 219
- Clearing 223
- Figure 4-3 225
- Clearing CO Trunk Troubles 225
- Figure 4-4 226
- Figure 4-5 230
- Figure 4-6 231
- Figure 4-7 236
- Complete System Failure 237
- Common Control Trouble 237
- Circuit Pack Trouble 239
- Power Supply Trouble 240
- Figure 4-8 244
- AC Power Schematic 244
- Power Supply Protection 245
- Power Supply Replacement 246
- Fan Assembly Trouble 247
- Overheating Trouble 248
- Backplane and Cabinet Trouble 248
- Figure 4-9 250
- Figure 4-10 251
- Figure 4-11 252
- Power Designations on 252
- Cabinet Backplane 252
- Table 4-D 254
- Time-Keeping Troubles 259
- Transmission Troubles 260
- Virtual Facilities Troubles 262
- Figure 4-12 263
- Trunk Troubles 266
- Incoming Trunk Problems 267
- DID Trunks Troubles 269
- ● CO belated release 270
- Clearing Switched 274
- Console Troubles 274
- Cannot Be Diagnosed 279
- Administration Manual 281
- Implementation Manual 282
- Installation and Maintenance 282
- Reference Manual 283
- Terminal Operations Manual 283
- User Guides (700 Series) 283
- ABBREVIATIONS AND ACRONYMS 285
- Connector Pin Assignments 287
- System 25 Building Wiring 287
- Table A-A 288
- Table A-B 290
- Building Wiring 290
- Building Wiring (Contd) 291
- APPENDIX B: 292
- Parts Listing 292
- DESCRIPTlON 295
- APPARATUS CODE 295
- Software 297
- APPENDIX B: Parts Listing 298
- Cabinet Unit Power Load 302
- Add Circuit Pack 303
- Add Cabling 304
- Figure C-1 305
- Figure C-2 306
- Replace Circuit Pack 308
- Add Cabinet 309
- Add Terminal 311
- Add Trunk 312
- Add Trunk—DS1 Interface 312
- Terminal 313
- Voice/Data 313
- Add Pooled Modem Circuit Pack 314
- Add Auxiliary Equipment 314
- APPENDIX D: 315
- System Upgrades 315
- APPENDIX E: 318
- Administration Codes and 318
- OOp Attendant 335
- Table E-E 336
- 29- FLEX DSS 336
- Table E-F 337
- Table E-G 338
- Pool 100 339
- Pool 101 339
- Pool 102 339
- † Cannot be changed 339
- †Cannot be changed 340
- Table E-J 341
- MET Set Button Defaults 341
- † Read-only for STARLAN CP 343
- II Action 367
- 3 (= Save/Restore Tape) 374
- APPENDIX F: 379
- Administration Error Messages 379
- ERROR MESSAGE 405
- AND DESCRIPTION 405
- POSSIBLE SOLUTION 405
- ● Facility port (trunk port) 425
- ● Auxiliary equipment port 425
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