ATT System 25 Installation And Maintenance Manual

							Contents
INTRODUCTION 
FCC PRECAUTIONS 
INSTALLATION 
TOOLS AND TEST EQUIPMENT 
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) 
617A Panel
Adapters
Fanning Strip
Cables  
Splitter Cables
Octopus Cables
853B Adapter Cable 
DS1 Connector Cables
Cable Labels 
Symbols Used in Figures 
PREINSTALLATION REQUIREMENTS
Table and Backboard
Network Interface
AC Power 
Grounding 
Lightning Protection
Secondary Protection 
Building Wiring 
INSTALL SYSTEM CABINETS
Position Cabinet(s) 
Check Cabinet Contents
Required Circuit Pack Positions
Label Connectors on Back Cover
Install 4A Retainer Clips
Connect Cabinet
1-1
1-2
2-1
2-2
2-3
2-4
2-4
2-4
2-6
2-6
2-8
2-10
2-11
2-11
2-12
2-12
2-12
2-13
2-15
2-16
2-16
2-16
2-18
2-18
2-19
2-21
2-22
2-23
2-23
2-23
2-28
2-28
2-29
2-30 
						

							TDM Bus Connections.
Ground Wire Connections.
POWER UP AND INITIALIZE SYSTEM
Connect Power
Connect Administration Equipment 
Cold Start the System 
Check Performance of Cabinet Components
Report Problems 
Initialize System 
INSTALL CROSS-CONNECT EQUIPMENT 
Install TAE, 617A Panels, and Fanning Strips 
Mount 858A orZ210A2 Adapters 
INSTALL MODULAR BULK POWER SUPPLY
(Optional) 
INSTALL EQUIPMENT ROOM TRUNK CABLING 
Connect Network Interfaces to TAE Blocks 
Connect Cabinets to TAE Blocks
Connect Ground Start, Loop Start, and DID Trunks 
Connect Tie Trunks
Install DS1 
Connect S25 to Another On Premises PBX 
Off Premises Metallic (Cable) Connections 
Off Premises Non Metallic Connections
Install Customer Service Unit (CSU) 
Line Compensation/Equalization 
Connect Coupled Bonding Conductor (CBC)
INSTALL EQUIPMENT ROOM STATION CABLING
Connect Building Wiring to SIP
Modular Plug Termination
4-Pair Cable Terminations
Connect Cabinets to SIP
Prepare Carrier Loading Labels 
Modify Octopus Cables if Required
Make SIP Connection for CPU/Memory 
Make SIP Connections to Cabinet for 7300H Series
Terminals 
Make SIP Connections to Cabinet for MET Sets
Make SIP Connections to Cabinet for Single-Line Sets
2-30
2-33
2-33
2-33
2-34
2-35
2-39
2-42
2-43
2-43
2-44
2-47
2-49
2-49
2-49
2-51
2-51
2-52
2-53
2-53
2-56
2-56
2-57
2-58
2-58
2-60
2-62
2-62
2-64
2-66
2-67
2-69
2-71
2-73
2-74
2-74
-ii- 
						

							Make SIP Connections for Data Terminals and
Computers      
Make SIP Connections to Cabinet for ATL Cordless
Telephones  
Perform SIP Housekeeping 
INSTALL 
EMERGENCY TRANSFER UNITS (ETUs)      
Make Emergency Transfer Connections            
Install Ground-Start Key 
INSTALL ATTENDANT 
CONSOLE
INSTALL TERMINALS 
Label Terminals  
Stand-Alone Voice Terminals
Stand-Alone Remotely Powered Voice Terminals 
Single-Line and 7300H Series Voice Terminals With
Associated ADUs
ATL Cordless Telephone
Off-Premises Stations (TN742) 
Out-of-Building Voice Terminals (TN742) 
Out-of-Building Voice Terminals (ZTN79) 
Off-Premises—DS1 lnterface
Stand-Alone Data Terminals
ADU Connections 
MADU Connections
INSTALL CUSTOMER’S 
SAT
Nonswitched Connection of Equipment Plugged Into
System AC Outlet
Nonswitched Connection of Equipment 
On-Premises Digital Switched Connection 
Off-Premises Nonswitched Connection 
Off-Premises Switched Connection
INSTALL CUSTOMER’S DTU
INSTALL STATION MESSAGE DIGITAL RECORDING
(SMDR) EQUIPMENT 
INSTALL STARLAN NETWORK INTERFACE 
Shared System 25 Voice/STARLAN NETWORK Data
Connections 
Single-Line Voice Terminals 
2-75
2-76
2-76
2-77
2-80
2-82
2-83
2-87
2-88
2-90
2-91
2-92
2-94
2-95
2-95
2-96
2-96
2-98
2-98
2-101
2-102
2-102
2-104
2-106
2-109
2-109
2-111
2-111
2-112
2-113
2-113
-III- 
						

							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
2-117
2-117
2-119
2-120
2-121
2-121
2-121
2-122
2-124
2-128
INSTALL DICTATlON SYSTEM INTERFACE                   
INSTALL PAGING SYSTEM INTERFACE               
Direct Connection to TN763 Auxiliary Trunk CP      
Connection to TN763 Auxiliary Trunk CP (278A
Adapter Required)                         
Connection to ZTN76 or ZTN77 CP                    
SYSTEM TESTS 
TEST OUTGOING TRUNKS
TEST DS1 INTERFACE.
TEST INCOMING DID TRUNKS
TEST INCOMING TIE TRUNKS 
TEST 7300H SERIES VOICE TERMINALS 
TEST SINGLE-LINE VOICE TERMINALS 
TEST ATL CORDLESS TELEPHONE 
TEST DIAL ACCESS CODES
TEST SYSTEM FEATURES 
ARS and SMDR Tests
DGC Test
System Speed Dialing Test 
PDC Login Test
Call Coverage Test 
TEST ATTENDANT CONSOLE 
TEST SELECTOR CONSOLE
3-1
3-1
3-1
3-2
3-2
3-3
3-5
3-6
3-6
3-6
3-6
3-7
3-7
3-8
3-8
3-9
3-9
TEST DATA TERMINAL DIALING FEATURE3-10
-iv- 
						

							MAKE POOLED MODEM TEST CALL         . . . .
TEST TRANSFER TO DATA                  . . . . ... . . .
TESTEXTERNAL ALERT (NIGHT SERVICE)
TEST
TEST
TEST
TEST
TEST
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
MAINTENANCE4-1
EQUIPMENT NEEDED
Precautions
GENERAL INFORMATION
System Errors and Alarms
Emergency Transfer
Circuit Pack LEDs
Attendant Console LED
Power Supply
Switches and Test Points
System Administration
Remote Initialization Maintenance (RIM) Service 4-4
4-4
4-4
4-4
4-6
4-6
4-6
4-6
4-6
MAINTENANCE STRATEGY
Total System Failures
Port Problems
Common Control Problems
Staion, Trunk Problems
Antomatic Maintenance Tests
Maintenance Failure4-9
4-11
4-11
4-12
4-13
4-13
4-13
USING THE DIGITAL TAPE UNIT
Setting Up the DTU
Saving Translations
Verifying Translations
Restoring Translations
4-14
4-14
4-15
4-16
4-18
-v- 
						

							ROUTINE MAINTENANCE 
Reseating and Replacing Circuit Packs 
Removing and Restoring Power 
Restarting the System 
ERROR LOG 
Accessing the Error Log From the SAT
ERROR MESSAGES
Clearing System-Detected Troubles 
Complete System Failure 
Common Control Trouble 
Circuit Pack Trouble 
Frontplane Ribbon Connector Trouble (Release 1
Only) 
Power Supply Trouble 
Power Supply Protection 
Power Supply Replacement 
Fan Assembly Trouble
Overheating Trouble 
Backplane and Cabinet Trouble 
Emergency Transfer Unit Trouble
CLEARING USER-DETECTED TROUBLES 
Administration Equipment Troubles 
Time-Keeping Troubles 
Voice Terminal and Wiring Troubles 
Voice Transmission Troubles
7300H Series Terminal Troubles 
Virtual Facilities Troubles 
Trunk Troubles 
Outgoing Trunk Problems 
Incoming Trunk Problems 
Error Log Interpretation: Loop-Start Trunks 
Error Log Interpretation: Ground-Start Trunks 
DID Trunks Troubles
Switched 
Loop Attendant Console Troubles 
Special Port Circuit Options for Stations and Trunks 
Data Line Troubles
Multiple Troubles or Trouble That Cannot Be
Diagnosed
4-20
4-20
4-22
4-23
4-27
4-30
4-32
4-61
4-61
4-61
4-63
4-64
4-64
4-69
4-70
4-71
4-72
4-72
4-80
4-81
4-81
4-82
4-82
4-83
4-84
4-85
4-89
4-89
4-90
4-90
4-91
4-92
4-93
4-99
4-100
4-102
-vi- 
						

							REFERENCES  
ABBREVIATIONS AND ACRONYMS  
5-1
6-1
A-1APPENDIX A: System Wiring
Connector Pin Assignments 
System 25 Building Wiring 
APPENDIX B: Parts Listing Tables  
A-1
A-1
B-1
APPENDIX C: System Additions or Changes 
Evaluate Cabinet Unit Power Load 
Add Circuit Pack 
Add Cabling 
Set Option Switches on TN760B CP
Replace Circuit Pack 
Add Cabinet
Add Termina
Add Trunk
Add Trunk—DSl 
Interface 
Replace Voice-Only Terminal With Voice/Data
Terminal
Add Pooled Modem Circuit Pack 
Add 
Auxiliary Equipment 
APPENDIX D: System Upgrades
APPENDIX E: Administration Codes and Data 
Default Dial Code Assignments 
C-1
C-1
C-2
C-3
C-5
C-7
C-8
C-10
C-11
C-11
C-12
C-13
C-13
D-1
E-1
E-1
-vii- 
						

							APPENDIX F: Administration Error Messages 
GLOSSARY   
INDEX 
F-1
G-1
I-1
-viii- 
						

							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.
Figure 2-24.
Figure 2-25.
Figure 2-26.
Figure 2-27.
Figure 2-28.
Figure 2-29.
Figure 2-30.
Figure 2-31.
Figure 2-32.
Figure 2-33.
Figure 2-34.
Figure 2-35.
Figure 2-36.10 BEAU
617A Panel
SIP Adapters
50A Fanning Strip
Splitter Cables 
Octopus Cable
853B Adapter Cable 
Cable Labels 
Typical System 25 Floor Plan 
AC Power Distribution—Multiple Cabinet System 
Three-Cabinet System, Front View With Covers
Removed
Position of Shorting Plugs on CPU/Memory Circuit
Pack . . . . . . . . . . . . . . . .
4A Retainer Clip Installation 
TDM Bus Terminations (Rear View of 3-Cabinet
System) 
Temporary SAT and DTU Connections 
Typical System 25 Port Circuit Pack 
SIP and TAE Backboard Layout
Alternate SIP and TAE Backboard Layout 
Mounting Adapters
Direct Connection (Side by Side)
Direction Connection (Side by Side) 
DS1 Connections—1311 to 4310 Feet
DS1 mnnections4311 Feet or More
DS1 Connections–Off Premise Cabling 
DS1 Connections-Non Metallic Connections 
CSU Connections
Voice and Data Station Records Form (Example
Entered)
Modular Plug Terminations Connected to the SIP
Cut Down Terminations Connected to the SIP
Carrier Loading Label 
Standard and Modified Octopus Cables
Mounting Octopus Cable on Fanning Strip 
10B Emergency Transfer Unit 
Emergency Transfer Unit Connections
Ground Start Key Installation 
Attendant Console With DXS Console 
Remotely Powered DXS Console Connection 
2-5
2-7
2-9
2-10
2-11
2-12
2-12
2-14
2-17
2-21
2-26
2-27
2-29
2-32
2-34
2-42
2-45
2-46
2-48
2-54
2-54
2-55
2-55
2-56
2-57
2-58
2-61
2-63
2-65
2-68
2-70
2-72
2-78
2-79
2-82
2-84
2-86
November 1995-ix- 
						

							Figure 2-37.
Figure 2-38.
Figure 2-39.
Figure 2-40.
Figure 2-41.
Figure 2-42.
Figure 2-43.
Figure 2-44.
Figure 2-45.
Figure 2-46.
Figure 2-47.
Figure 2-48.
Figure 2-49.
Figure 2-50.
Figure 2-51.
Figure 2-52.
Figure 2-53.
Figure 2-53a.
Figure 2-54.
Figure 2-55.
Figure 2-55a.
Figure 2-56.
Figure 2-57.
Figure 2-58.
Figure 2-59.
Figure 4-1.
Figure 4-2.
Figure 4-3.
Figure 4-4.
Figure 4-5.
Figure 4-6.
Figure 4-7.Stand-Alone Voice Terminal Connections                    2-90
Stand-Alone Remotely Powered Voice Terminal
Connections2-91
Single-Line Terminal/ADU Connections2-93
7300H Series Terminal/ADU Connections                              2-94
DS1 to D4 Connections for Off-Premises Stations 2-97
Local Powering of an ADU2-99
Remote Powering of an ADU (Optional)2-100
MADU to Host Computer or Terminals Connections 2-101
Nonswitched Connection of Peripheral Equipment
Plugged Into System AC Outlet2-103
Greater Than 50 Feet and/or Not Sharing Same
AC Outlet
2-105
On-Premises Peripheral Equipment With Switched
Connection to CPU/Memory                                    2-108
Off-Premises Peripheral Equipment With Direct
Connection to CPU/Memory
2-110
ZTN84 STARLAN Interface CP Connection          2-112
Single-Line Analog Terminal/STARLAN
NETWORK Workstation Connections2-114
7300H Series Terminal/STARLAN NETWORK
Workstation Connections2-116
Music Source, FCC Registered2-118
Music Source, Non-FCC Registered2-119
Music-on-Hold2-119a
External Alerts2-120
Paging System Connection to TN763 Circuit Pack 2-123
Loudspeaker Paging with Background
Music2-124a
Paging System Connection to TN763 Circuit Pack
(278A Adapter Required)
2-126
278A Adapter Plug Positions for Connecting TN763
Circuit Pack to Paging System
2-127
PagePac 20 System Connection to ZTN76 or
ZTN77 Circuit Pack
2-129
Paging System Connection to ZTN76 or ZTN77  2-131
Response to System 25 Trouble Report4-10
Clearing Power Supply Troubles (Sheet 1 of 4-47
Clearing CO Trunk Troubles4-49
Clearing 4-Wire Tie Trunk Troubles (Sheet 1 of 4)    4-50
Clearing STARLAN Interface Troubles4-54
Clearing Tie Trunk Troubles (Sheet 1 of 5) 4-55
Clearing Paging Equipment Troubles4-60
-x-
November 1995