Main
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DANGER
CUSTOMER WARNING
SERVICE TECHNICIAN WARNING
THE FOLLOWING SYMBOLS AND PICTOGRAPHS APPEAR ON THE EQUIPMENT
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FCC NOTIFICATION AND REPAIR INFORMATION AT&T SYSTEM 25
MEANS OF CONNECTION
NOTIFICATION TO THE TELEPHONE COMPANY
REPAIR INSTRUCTIONS
RIGHTS OF THE TELEPHONE COMPANY
HEARING AID COMPATIBILITY
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FCC INFORMATION
FCC WARNING STATEMENT
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Contents
INTRODUCTION
INSTALLATION
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SYSTEM TESTS
MAINTENANCE
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REFERENCES ABBREVIATIONS AND ACRONYMS
APPENDIX A: System Wiring
APPENDIX B: Parts Listing
Tables
APPENDIX C: System Additions or Changes
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Figures
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Tables
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INTRODUCTION
FCC PRECAUTIONS
INSTALLATION
TOOLS
AND
TEST EQUIPMENT
CROSS-CONNECT EQUIPMENT DESCRIPTION
Trunk Access Equipment
700A- 110-M-25 or 700A-66-B1-25 (157BF) Cut-Down Jack
10B Emergency Transfer Unit (ETU)
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Station Interconnect Panel (SIP)
617A Panel
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Adapters
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Fanning Strip
Cables
Splitter Cables
Octopus Cables
8536 Adapter Cable
DS1
Connector Cables
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Figure 2-7.
Cable Labels
2-14
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PREINSTALLATION REQUIREMENTS
Table and Backboard
Network Interface
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AC Power
Grounding
Lightning Protection
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Secondary Protection
II
2-21
Figure 2-9.
H
AC Power DistributionMultiple Cabinet System
Building Wiring
INSTALL SYSTEM CABINETS
Position Cabinet(s)
Check
Cabinet Contents
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Required Circuit Pack Positions
Label Connectors on Back Cover
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Connect Cabinets
TDM Bus Connections
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Ground Wire Connections
POWER UP AND INITIALIZE SYSTEM
Connect Power
Connect Administration Equipment
Cold Start the System
4.
8.
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Check Performance of Cabinet Components
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Initialize System
INSTALL CROSS-CONNECT EQUIPMENT
Install TAE, 617A Panels, and Fanning Strips
Figure 2-16.
SIP and TAE Backboard Layout
2-45
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Mount 858A or 2210A2 Adapters
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INSTALL MODULAR BULK POWER SUPPLY (Optimal)
INSTALL EQUIPMENT ROOM TRUNK CABLING
Connect Network Interfaces to TAE Blocks
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Connect Cabinets to TAE Blocks
Connect Ground Start, Loop Start, and DID Trunks
Connect Tie Trunks
Install
DS1
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Off Premises Metallic (Cable) Connections
Off Premises Non Metallic Connections
Install
Customer Service
Unit (CSU)
Line Compensation/Equalization
Connect Coupled Bonding Conductor (CBC)
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INSTALL EQUIPMENT ROOM STATION CABLING
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Modular Plug Termination
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4-Pair Cable Terminations
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Circuit Pack Terminal Type
Distance (in feet) From Cabinets Using 24 AWG Wire
Prepare Carrier Loading Labels
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Modify Octopus Cables if Required
Figure 2-30. Standard and Modified Octopus Cables
2-70
Make SIP Connection for CPU/Memory
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SIP
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Make SIP Connections for Data Terminals and Computers
Make SIP Connections to Cabinet for ATL Cordless Telephones
Perform SIP Housekeeping
6.
INSTALL EMERGENCY TRANSFER UNITS (ETUs)
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Make Emergency Transfer Connections
Connect Trunk Lines From Cabinet to ETU
Connect Port Lines From Cabinet to ETU
Connect 3:1 Splitter Cable to ETU
Connect ETU to SIP
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Install Ground-Start Key
INSTALL ATTENDANT CONSOLE
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7. 8. 9. 10.
12. 13.
Figure 2-36.
Remotely Powered DXS Console Connection
2-86
INSTALL TERMINALS
Label Terminals
2-88
Table 2-F.
Feature Button Abbreviations and Labels
and
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Stand-Alone Voice Terminals
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Stand-Alone Remotely Powered Voice Terminals
Single-Line and 7300H Series Voice Terminals With Associated ADUs
Figure 2-39.
Single-Line Terminal/ADU Connections
2-93
ATL Cordless Telephone
Off-Premises Stations (TN742, TN746B in R3V2)
(TN742,
Out-of-Building Voice Terminals
TN746B in R3V2)
Out-of-Building Voice Terminals (ZTN79)
Off-Premises-DS1 Interface
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Stand-Alone Data Terminals
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MADU Connections
INSTALL CUSTOMERS SAT
Nonswitched Connection of Equipment Plugged Into System AC Outlet
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Nonswitched
Connection of Equipment
LEGEND :
NOTE : DEPENDING ON EQUIPMENT, ADU MAY REQUIRE AUXILIARY POWER.
On-Premises Digital Switched Connection
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Off-Premises Switched Connection
Figure 2-48. Off-Premises Peripheral Equipment With Direct Connection to CPU/Memory
2-110
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INSTALL STARLAN NETWORK INTERFACE
Shared System 25 Voice/STARLAN NETWORK Data Connections
Single-Line Voice Terminals
Figure 2-50. Single-Line Analog Terminal/STARLAN NETWORK Workstation Connections
2-114
Series Voice Terminals
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INSTALL MUSIC-ON-HOLD INTERFACE
FCC-Registered Music Source Interface
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Non-FCC Registered Music Source Interface
Figure 2-53a. Music-on-Hold
2-119a
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INSTALL EXTERNAL ALERTS
INSTALL RECORDED DELAY ANNOUNCEMENT
INSTALL DICTATION SYSTEM INTERFACE
INSTALL PAGING SYSTEM INTERFACE
Direct Connection to TN763 Auxiliary Trunk CP
*
<
Connection to TN763 Auxiliary Trunk CP (278A Adapter Required)
Figure 2-55a. Loudspeaker Paging with Background Music November 1995 2-124a
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SYSTEM TESTS
TEST OUTGOING TRUNKS
TEST DS1 INTERFACE
TEST INCOMING DID TRUNKS
TEST INCOMING TIE TRUNKS
TEST 7300H SERIES VOICE TERMINALS
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TEST SINGLE-LINE VOICE TERMINALS
TEST ATL
CORDLESS TELEPHONE
TEST DIAL ACCESS CODES
TEST SYSTEM FEATURES
ARS and SMDR Tests
Remote
Access Test
DGC
Test
System Speed Dialing Test
Test
PDC Login
Call Coverage Test
TEST ATTENDANT CONSOLE
TEST SELECTOR CONSOLE
TEST DATA TERMINAL DIALING FEATURE
MAKE POOLED MODEM TEST CALL
TEST TRANSFER TO DATA
TEST EXTERNAL ALERT (NIGHT SERVICE)
TEST DICTATION SYSTEM ACCESS
TEST PAGING INTERFACE
TEST
MUSIC-ON-HOLD
TEST EMERGENCY TRANSFER
TEST TOUCH-TONE RECEIVERS
MAINTENANCE
EQUIPMENT NEEDED
Precautions
GENERAL
MAINTENANCE INFORMATION
System Errors and Alarms
Emergency Transfer
Circuit Pack LEDs
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Attendant Console LED
Power Supply LED
Switches and Test Points
System Administration Terminal
Remote Initialization and Maintenance (RIM) Service
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MAINTENANCE STRATEGY
Figure 4-1. Response to System 25 Trouble Report
4-10
Total System Failures
Port Problems
Common Control Problems
Station, Wiring, and Trunk Problems
Automatic Maintenance Tests
Maintenance Failure
USING THE DIGITAL TAPE UNIT
Setting Up the DTU
Saving Translations
Verifying Translations
7.
.
Restoring Translations
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ROUTINE MAINTENANCE
Reseating and Replacing Circuit Packs
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Removing and Restoring Power
Restarting the System
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ERROR LOG
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8.
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ERROR MESSAGES
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Clearing System-Detected Troubles
Complete System Failure
Common Control Trouble
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Circuit Pack Trouble
Frontplane Ribbon Connector Trouble (Release 1 Only)
Power Supply Trouble
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x
shown
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A
x
Legend: Notes:
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Power Supply Protection
Power Supply Replacement
8.
Fan Assembly Trouble
Overheating Trouble
Backplane and Cabinet Trouble
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Table 4-D. 25-Pair Connector to Backplane Designations
Note: TN747 is same as ZTN76 and ZTN77. TN762 is same as ZTN79. 4-78
Table 4-D. 25-Pair Connector to Backplane Designations Contd)
4-79
Figure
4-11a. 853 Adapter 4-79a
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CLEARING USER-DETECTED TROUBLES
Administration Equipment Troubles
2.
Time-Keeping Troubles
Voice Terminal and Wiring Troubles
Voice
Transmission Troubles
7300H Series Terminal Troubles
Virtual Facilities Troubles
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Trunk Troubles
(CO)
Outgoing Trunk Problems
Incoming Trunk Problems
5.
Error Log Interpretation: Loop-Start Trunks
Error Log Interpretation: Ground-Start Trunks
DID Trunks Troubles
3. 4. 5. 6. 7. 8. 9.
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Special Port Circuit Options for Stations and Trunks
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Administration Manual
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ABBREVIATIONS AND ACRONYMS
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Table A-A. 25-Pair Connector Pin Assignments
MET
TN735 (Slots 1-12)
ZTN79
Line
Table A-A. 25-Pair Connector Pin Assignments (Contd)
Analog
(Slots 1-12)
TN726TM742TN746BInterface
TN763_
Table A-B. Building Wiring
A-4
Table A-B.
Building Wiring (Contd)
A-5
4-Pair
APPENDIX B: Parts Listing
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APPENDIX B: Parts Listing
B-7
APPENDIX B: Parts Listing
B-8
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APPENDIX C: System Additions or Changes
Evaluate
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Add Circuit Pack
Add Cabling
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APPENDIX C: System Additions or Changes Table C-B. TN760B Option Switch Settings and Administration
Circumstance
C-6
Co-Located
Preferred Signaling Format System
Replace Circuit Pack
Add Cabinet
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Add Terminal
Add Trunk
Add TrunkDS1 Interface
Replace Voice-Only Terminal With Terminal
Voice/Data
Add Pooled Modem Circuit Pack
Add Auxiliary Equipment
APPENDIX D: System Upgrades
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APPENDIX E: Administration Codes and
Data
Default Dial Code Assignments
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100
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FeatureTN742,
ZTN78TN763 ZTN76ZTN77 TN748 TN758 ZTN79
2101
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APPENDIX F: Administration Error Messages
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ERROR MESSAGE AND DESCRIPTION POSSIBLE SOLUTION
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GLOSSARY
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current
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INDEX
A
I-1
B
c
D
I-2
E
F
I-3
G
H
L
M
I-4
N
O
R
I-5
S
T
I-6
I-7
U
V
I-8
W