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Network Adapter 25

AT&T Network Adapter 25 Installation And Maintenance Manual

AT&T
AT&T System 25
Installation and
Maintenance Manual
555-540-103
B
November 1995
DANGER
Do not open the fan assembly or remove rear cabinet cover before unplugging the cabinet from the electrical outlet. Wait at least five minutes after unplugging the power cord before removing the rear cover or power supply. The AT&T System 25 cabinets are not user serviceable. Some voltages inside the cabinets are hazardous.
This equipment is to be serviced only by qualified technicians.
CUSTOMER WARNING
The Installation and Maintenance Manual is designed for use by qualified service technicians only. Technician qualification includes
completion of an AT&T hands-on instructor-led course covering
installation and maintenance for this product. The use of these
documents by anyone else might void the warranty. Hazardous
electrical voltages are present inside this product.
SERVICE TECHNICIAN WARNING
1. Never install telephone wiring during a lightning storm.
2. Never install telephone jacks in wet locations unless the is specifically designed for wet locations.
3. Never touch uninsulated telephone wires or terminals un
jack
less the
telephone line has been disconnected at the network interface.
4. Use caution when installing or modifying telephone lines.
a
THE FOLLOWING SYMBOLS AND PICTOGRAPHS
APPEAR ON THE EQUIPMENT
SYMBOL
The exclamation point within an equilateral
triangle is intended to alert the user to the presence of important operating
and maintenance
(servicing) instructions
ELECTRICAL SHOCK
Warns of the danger
of electrical shock from hazardous voltages present within the
control unit
Warns of the risk of
fire if the air filter is not in place
b
FCC NOTIFICATION AND REPAIR INFORMATION
AT&T SYSTEM 25
This telephone equipment is registered with the Federal Communications Commission (FCC) in accordance with Part 68 of its Rules. In compliance with the Rules, be advised of the following:
MEANS OF CONNECTION
Connection of this telephone equipment to
the nationwide telecommunications network shall be through a standard network interface USOC RJ21X jack. Connection to private line network channels requires USOC RJ2GX jack for tie lines or USOC RJ21X jack for off-premises station lines. Connection to T1 facilities requires USOC RJ48X or RJ48C jack. These can be ordered from your telephone company.
NOTIFICATION TO THE TELEPHONE COMPANY
If the system is to be connected to off-premises stations (OPSs), you must notify the telephone company of the OPS class of service, OL13C, and the service order code, 9. OF. For R3 systems, the Analog service order code is 9.0Y, the
Digital service order code is 6.0Y.
Upon the request of the telephone company, inform them of the following:
— The Public Switched Network “lines” and the Private “lines” to which
you will connect the telephone equipment.
— For private line connections, provide the facility interface code, TL31M
for tie lines. You must also specify the service order code, 9.0F or 9.0Y for R3 systems.
Customer instructions will advise the customer to provide the telephone company with the registration number (either -MF or -KF, depending on the application of the system) and the ringer equivalency number (REN) from the label on the equipment. In addition, customer will be advised
c
that certification in writing may be required when an existing
multifunction system is being reconfigured as a Key system, if the
customer desires the lower rate.
— For Digital connections with D4 Framing Format provide the Facility
interface code 041DU9-B, for digital connections with Extended Framing Format, provide the Facility interface code 04DU9-C. You must also
specify the service order code, 6.0Y. — The quantities and USOC numbers of the jacks required. — For each jack, provide the sequence in which lines are to be connected;
the type lines and the facility interface code and the ringer equivalence
number by position, when applicable.
This telephone equipment should not be used on coin telephone lines. Connection to party line service is subject to state tariffs.
REPAIR INSTRUCTIONS
If you experience trouble with this telephone equipment, contact the AT&T Business Customer Service Center on 1-800-242-2121. The telephone company may ask that you disconnect this equipment from the network until the problem has been corrected or until you are sure that this equipment is not malfunctioning.
System 25 troubles that must be escalated to a higher level of maintenance
should be referred to the National Service Assistance Center on 1-800-628-2888.
RIGHTS OF THE TELEPHONE COMPANY
If your telephone equipment causes harm to the telephone network, the telephone company may discontinue your service temporarily. If possible, they will notify you in advance. But if advance notice isn’t practical, you will be notified
as soon as possible. You will be informed of your right to file a complaint with the
FCC.
d
Your telephone company may make changes in its facilities, equipment, operations, or procedures that could affect the proper functioning of your equipment. If they do, you will be notified in advance to give you an opportunity
to maintain uninterrupted telephone service.
HEARING AID COMPATIBILITY
The voice terminals described in this manual are compatible with inductively coupled hearing aids as prescribed by the FCC.
FCC INFORMATION
FCC REGISTRATlON lNFORMATlON
Registration Number
AS593M-71565-MF-E
Ringer Equivalence
0.5A
Network Interface
RJ21X, RJ2GX or RJ48X
PRIVATE LINE SERVICE
Service Order Code
● Analog
9.0F
● Analog (R3)
9.0Y
●
Digital (R3)
I
6.0Y
Facility Interface Code
●
Tie Lines
TL31 M
● Off-Premises Stations
OL13C
● Digital D4 Framing
04DU9-B
●
Digital ESF
04DU9-C
November 1995
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 cause interference to radio communications.
It has been tested and found to comply with the limits for a Class A computing device pursuant to Subpart J of Part 15 of FCC Rules, which are designed to provide reasonable protection against such interference when operated in a commercial environment.
Operation of this equipment in a residential area is likely to cause interference in which case the user at his or her own expense will be required to take whatever measures may be required to correct the interference.
SECURITY OF YOUR SYSTEM-PREVENTING TOLL FRAUD
As a customer of a new telephone system, you should be aware that there exists an increasing problem of telephone toll fraud. Telephone toll fraud can occur in
many forms, despite the numerous efforts of telephone companies and telephone equipment manufacturers to control it. Some individuals use electronic devices to prevent or falsify records of these calls. Others charge calls to someone else’s
number by illegally using lost or stolen calling cards, billing incorrect parties, clipping on to someone else’s line, and breaking into someone else’s telephone equipment physically or electronically. In certain instances, unauthorized
individuals make connections to the telephone network through the use of remote access features.
The Remote Access feature of your system, if you chose to utilize it, permits off­premises callers to access the system from a remote telephone by using an 800
number or a 7- or 10- digit telephone number. The system returns an acknowledgement signaling the user to key in his or her authorization code, which is selected and administered by the system manager. After the authorization code is accepted, the system returns dial tone to the user. If you do
not program specific egress restrictions, the user will be able to place any call
● When possible, block out-of-hours calling.
● Frequently monitor system call detail reports for quicker detection of any
unauthorized or abnormal calling patterns.
● Limit Remote Call Forward to persons on a “need-to-know” basis.
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 FEATURE
3-10
-iv-
MAKE POOLED MODEM TEST CALL
. . . .
TEST TRANSFER TO DATA . . . . ... . . .
TEST
EXTERNAL 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
MAINTENANCE
4-1
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 Failure
4-9 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-1
APPENDIX 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-
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 Connections
2-91 Single-Line Terminal/ADU Connections 2-93 7300H Series Terminal/ADU Connections 2-94 DS1 to D4 Connections for Off-Premises Stations 2-97 Local Powering of an ADU
2-99 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 Outlet
2-103
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 Connections
2-114 7300H Series Terminal/STARLAN NETWORK Workstation Connections
2-116
Music Source, FCC Registered
2-118
Music Source, Non-FCC Registered
2-119
Music-on-Hold
2-119a
External Alerts
2-120 Paging System Connection to TN763 Circuit Pack 2-123 Loudspeaker Paging with Background Music
2-124a
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 Report
4-10
Clearing Power Supply Troubles (Sheet 1 of 4-47
Clearing CO Trunk Troubles
4-49 Clearing 4-Wire Tie Trunk Troubles (Sheet 1 of 4) 4-50 Clearing STARLAN Interface Troubles
4-54 Clearing Tie Trunk Troubles (Sheet 1 of 5) 4-55 Clearing Paging Equipment Troubles 4-60
-x-
November 1995
Figure 4-8. Figure 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. Table C-A. Table C-B.
Table E-A. Table E-B.
AC Power Schematic
4-68 System Cabinet Backplane Wiring Side (Sheet 1 of 2)
4-73
TDM Signal Destinations on Cabinet Backplane 4-75
Power Designations on Cabinet Backplane 4-76 853 Adapter
4-79a Clearing Virtual Facilities Troubles (Sheet 1 of 3) 4-86 Clearing Switched Loop Attendant Console
Troubles (Sheet 1 of 5)
4-94
Typical System 25 Port Circuit Pack
C-4
Tie Trunk (TN760B) Circuit Pack Option Switches C-5
DS1 Network Interface Connections
C-12
Tables
Tools and Test Equipment Required for
Installation
2-2 Circuit Packs, Their Functions, and Protectors 2-24 Displayed SAT Messages During Cold or Warm
Restart
2-37
Circuit Pack LED Status Indications
2-40
Circuit Pack Versus Terminal Type 2-66
Feature Button Abbreviations and Lables 2-88 Displayed SAT Messages During Cold or Warm Start 4-25
Power Supply Test Points
4-65
Circuit Pack Voltages—Symptoms
4-66
25-Pair Connector to Backplane Designations 4-78
Station/Trunk/Special Port Circuit Pack Options 4-99
Applicable Actions for Circuit Pack Options 4-
100 25-Pair Connector Pin Assignments
A-2
Building Wiring
A-4
25-Pair Connector Pin Assignments
A-2
Building Wiring
A-4
Unit Loads C-2
TN760B Option Switch Settings and Administration
C-6
Default Dial Codes
E-1
PORT/PD. Administration, Voice Terminals (Menu=1/2)
E-2
November 1995
-xi-
Table E-C. Table E-D. Table E-E. Table E-F.
Table E-G.
. .
Table E-H.
Table E-1.
Table E-J. Table E-K.
Table E-L. Table E-M.
Table E-N. Table E-0. Table E-P.
Table E-Q. Table E-R. Table E-S. Table E-T. Table E-U. Table E-V. Table E-W. Table E-X.
Table E-Y.
Table E-Z.
Table E-AA.
Table E-AB. Table E-AC. Table E-AD. Table E-AE. Table E-AF. Table E-AG. Table E-AH.
Voice Terminal Type Codes Feature Button Translation (Menu=1/2) Multiline Voice Terminal Button Defaults Switched Loop Attendant Console Button Defaults (Type 310) Switched Loop Attendant Console Button Defaults (Type 311) Direct Trunk Attendant Console Button Defaults
(Cold-Start Defaults)
Direct Trunk Attendant Console Defaults
(Administration-lnstalled Defaults)
MET Set Button Defaults PORT/PDC Administration, Data Terminals
(Menu=1/2)
Data Port Type Codes
Port Administration, Trunks (Menu=1) Trunk Type Codes Trunk Class-of-Service (for all trunks except DID)
Port Administration, Auxiliary Equipment (Menu=1) Special Feature Port Type Codes
Port Options Applicable Options
PDC Administration (Menu=2) High Density Circuit (Menu=3) System Administration (Menu=4) Standard Call Type Defaults Message-Center-Like Call-Type Defaults (effect of Action 90) Floating PDC Administration (Menu=5) Direct Group Calling (DGC) Administration (Menu= 6) Toll Calls Allowed (TCA) List Administration (Menu= 7) DGC Announcement Administration Searches: Action Items (Menu=8) Board Type—Wildcard Representation Port/Board Type—Specific Representation Save/Restore and System Restarts (Menu=9) RS232 Port Administration (Menu=10) Automatic Route Selection Administration
(Menu=11)
E-13 E-14 E-17
E-18
E-19
E-20
E-21 E-22
E-23 E-25 E-26 E-28 E-29
E-30 E-32 E-33 E-34 E-35 E-35 E-36 E-42
E-43 E-43
E-44
E-44 E-45 E-46 E-50 E-51 E-54 E-55
E-56
-xii-
November 1995
INTRODUCTION
INTRODUCTION
This manual provides procedures and information for installing, and testing the AT&T System 25 Release 3 and associated equipment. The maintenance
information contained in Section 4 pertains to the AT&T System 25 Release 1, Versions 1 and 2 (RI VI and R1V2), Release 2, Version 1 (R2V1 ), as well as to
AT&T System 25 Release 3, Version 1,2 and 3 (R3V1, R3V2 and R3V3).
Installation and maintenance procedures for the AT&T System 25 Call Management System and Integrated Solution are provided in a separate set of
documents for each system.
This manual is intended for use by an installation and/or maintenance technician dispatched to a System 25 site for an installation or in response to an alarm or a user trouble report. This technician must have completed the Tier 1 training course (T-335). Each installed System 25 has a customer-designated System Administrator.
The technician should work closely with this System
Administrator. The System 25 Administration (555-540-500) and Implementation
(555-540-650) Manuals describe the administrator’s functions.
In the S25 documentation, the terms “voice terminal”, “voice stations”, and
“telephone” are used to describe the same piece of hardware. The S25 documentation also uses the terms ‘Personal Dial Code (PD.)”, and ‘extension number’ interchangeably.
The remainder of this manual is divided into Sections 2 through 6 and six appendices:
●
Section 2. Installation-Describes the installation of the cabinet(s)
wiring, and other components. Certain preinstallation requirements
must be met; therefore, read “PREINSTALLATION REQUIREMENTS”
before installing any part of System 25.
●
Section 3. System Test—Describes all the tests necessary to verify that the system is operating correctly.
●
Section 4. Maintenance — Provides information necessary for
monitoring, testing, and maintaining all releases of AT&T System 25.
November 1995
1-1
INTRODUCTION
●
●
●
●
●
●
●
●
Section 5 References-Lists and
describes other related
documentation Section 6 Abbreviations and Acronyms-Lists and describes
abbreviations and acronyms frequently encountered in System 25 documentation
Appendix A. System Wiring Table–Lists pinouts and wiring used with System 25
Appendix B. Parts Listing—Lists all related parts of System 25 Appendix C. System Additions and Changes-Describes how to
make additions to an existing system Appendix D. System Upgrade–Describes how to upgrade an R1V1
R1V2 or R2V1 release of System 25 to an R3 release
Appendix E. System Codes and Data Entries–Lists all default codes and data entries for administering the system
Appendix F. Administration Tables–Lists all error messages that can occur when the system is being administered
FCC PRECAUTIONS
Electromagnetic fields radiating from the system cabinets may generate noise in other communications equipment The technician must be sure that all cabinet
panels and covers are securely in place after performing maintenance
Caution:
Electrostatic discharge can destroy or severely damage integrated circuits or CPs.
The maintenance technician MUST ALWAYS WEAR A WRIST GROUNDING STRAP when handling CPs The cord must be attached to the grounding block at the back of the cabinet or to a front-cover retainer screw Damage to integrated circuits caused by electrostatic discharge may not be immediately apparent
Caution: The wrist grounding strap must not be clipped to any
cabinet location other than the grounding block.
1-2
November 1995
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 system is as follows:
1.
Preinstallation Requirements
2. Install System Cabinets
3. Power Up and Initialize System
4.
Install Cross-Connect Equipment (See Note below.)
5. Install Modular Bulk Power Supply (Optional)
6. Connect Cabinets to
7. Connect Cabinets to
8. Install
9. Install
10.
Install
Trunk Access Equipment
Station Interconnect Panel (SIP)
Customer’s Peripheral Equipment
Terminals
Auxiliary Equipment
11.
Test System
Note:
Step 4 can be done before Steps 2 and 3 if the cross­connect equipment is delivered before the cabinets.
2-1
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
Tasks Tools Required
Recommended Type
Install
Push Drill
Cross-Connect Screwdriver
8-inch Flat Blade
Field
Carpenter’s Level
30-inch Rule 30-inch Chalk Line
11 O-type Punch-down Tool
AT-8762 D-Impact Tool Adapter
BR866 JC (403608235)
Unpack
Tin Snips
Cabinet
Utility Knife Adjustable Wrench 6- or 8-inch
Install
Rule
30-inch
Cabinets
Adjustable Wrench
6- or 8-inch
or Add Screwdriver
8-inch Flat Blade
Carriers
Allen Wrench 1/8-inch
Add Voice Terminals Diagonal Pliers or Install Screwdriver 8-inch Flat Blade Auxiliary 11 O-type Punch-down Tool
AT-8762 D-impact Tool
Equipment Add
Screwdriver 8-inch Flat Blade
Circuit Packs (CPs)
Initialize
System Administration TerminalRS-232C
System
Digital Tape Unit (not RS-232C)
—
Test System*
Test Set Dracon TS21
☛
Used in Section 3 of this manual
2-2
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 Interconnect Panel
— 617A Panel
Adapters
Fanning Strip
● Cables
— Splitter Cables
— Octopus Cables
— Cable Labels.
the System 25 cross-
System 25 equipment
This section describes
2-3
INSTALLATION
Trunk Access Equipment
The trunk access equipment (TAE) consists of 700A-I 10-61-25 or 700A-66­B1 -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
Trunk circuits that appear on the network interfaces are grouped by trunk type (Direct Inward Dialing [DID], Central Office [CO], or Tie) and punched down on the 700A jack. One 700A jack is required for each RJ21 X or RJ2GX
network interface. The 700A-1 10-B1-25 jack has a 110-type cut-down field,
and the 700A-66-B1-25 (157BF) has a 66-type cut-down field. It is important to note that most secondary wiring protectors (sneak current fuses) are compatible only with the 66-type jack.
10B Emergency Transfer Unit (ETU)
During a power failure or system outage, each 10B ETU provides contact closures for bypassing the switch and connecting up to five predesignated
FCC registered single-line voice terminals to telephone company trunks.
Connectorized cables (25-pair) connect the ETU to the 700A jacks, the
system cabinets, and the Station Interconnect Panel. A modular plug-ended
cord (part of octopus cable) connects control power (–48 V dc) from the
system cabinet.
Screw terminals that connect to relay contacts which may be used for an external alerting device are also provided. The relay contacts close when a failure occurs. (Any alerting device and associated power unit with a dc current requirement less than or equal to 0.5 ampere may be used.) The ETU
also controls a DID make-busy contact that connects to the last pair on the 700A jack. For a more detailed drawing of the 10B ETU, see Install
Emergency Transfer Units (ETUs) in this part.
2-4
INSTALLATION
NOTE: 9“ WIDE, MOUNTING
CENTERS ARE 8-1/2” APART, FLANGES
OVERLAPPED
Figure 2-1.
10B ETU
2-5
INSTALLATION
Station Interconnect Panel (SIP)
The SIP is the station cross-connect field and consists of the following equipment:
● 617A Panels
● Adapters
● 50A Fanning Strips.
617A Panel
The 617A Panel is a metal plate with keyslot holes on each side for mounting on a backboard. (See Figure 2-2.) Each 617A Panel can hold eight 2210A2 or 858A Adapters, each of which can accommodate six connections to the port circuits in the cabinets.
As many as five 617A Panels may be required
for a maximum size system.
The adapters snap into prepunched holes on the 617A Panels. (Reattached spacer buttons keep adapters from touching the metal panels.)
The cable rings located at the top of the 617A Panel route the building wiring cables to the adapters.
Purse lock clips hold the building wiring cables in place. The white posts at the bottom of the 617A Panel guide the wiring from the 50A Fanning Strip to each column of adapters.
Preprinted boxes and numbers on the panel identify modular jacks for record-keeping purposes.
Letters are marked in the boxes at the top of each
column by the installer.
The letter (A through J) and the corresponding preprinted row number (1 through 24) identify the port jacks. For example, Al identifies the modular jack located in column A row 1.
2-6
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