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AT&T
AT&T System 25
Installation and
Maintenance Manual
555-540-103 B
November 1995
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©1989 AT&T All Rights Reserved Printed in USA TO ORDER COPIES OF THIS DOCUMENT REFER TO DOCUMENT NUMBER 555-540-103 Contact: Your AT&T sales representative, or Call: 800-432-6600, Monday through Friday between 7:30 am and 6:00 pm EST, or In Canada call: 800-255-1242 Write: AT&T Customer Information Center 2855 North Franklin Road P.O. Box 19901 Indianapolis, Indiana 42619 Every effort was made to ensure that the information in this document was complete and accurate at the time of printing. Howe
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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 b y qualified service tech
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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
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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
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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 seque
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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-
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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
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normally dialed from a telephone associated with the system. Such an off- premises network call is originated at, and will be billed from, the system location. The Remote Access feature, as designed, helps the customer, through proper administration, to minimize the ability of unauthorized persons to gain access to the network. Most commonly, phone numbers and codes are compromised when overheard in a public location, through theft of a wallet or purse containing access information, or through c
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● 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.
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Contents 1-1 INTRODUCTION FCC PRECAUTIONS 1-2 2-1 INSTALLATION TOOLS AND TEST EQUIPMENT 2-2 CROSS-CONNECT EQUIPMENT DESCRIPTION 2-3 Trunk Access Equipment 2-4 700A-110-BI -25 or 700A-66-B1-25 Cut-Down Jack 2-4 108 Emergency Transfer Unit (ETU) 2-4 2-6 Station Interconnect Panel (SIP) 617A Panel 2-6 Adapters 2-8 Fanning Strip 2-10 2-11 Cables 2-11 Splitter Cables Octopus Cables 2-12 853B Adapter Cable 2-12 DS1 Connector Cables 2-12 Cable Labels 2-13 Symbols Used in Figures 2-15 PREINSTALLATI
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2-30 TDM Bus Connections. 2-33 Ground Wire Connections. 2-33 POWER UP AND INITIALIZE SYSTEM 2-33 Connect Power 2-34 Connect Administration Equipment 2-35 Cold Start the System Check Performance of Cabinet Components 2-39 2-42 Report Problems Initialize System 2-43 2-43 INSTALL CROSS-CONNECT EQUIPMENT 2-44 Install TAE, 617A Panels, and Fanning Strips 2-47 Mount 858A orZ210A2 Adapters INSTALL MODULAR BULK POWER SUPPLY 2-49 (Optional) 2-49 INSTALL EQUIPMENT ROOM TRUNK CABLING 2-49 Connect N
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Make SIP Connections for Data Terminals and 2-75 Computers Make SIP Connections to Cabinet for ATL Cordless 2-76 Telephones 2-76 Perform SIP Housekeeping 2-77 INSTALL EMERGENCY TRANSFER UNITS (ETUs) 2-80 Make Emergency Transfer Connections 2-82 Install Ground-Start Key 2-83 INSTALL ATTENDANT CONSOLE 2-87 INSTALL TERMINALS 2-88 Label Terminals 2-90 Stand-Alone Voice Terminals 2-91 Stand-Alone Remotely Powered Voice Terminals Single-Line and 7300H Series Voice Termi
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2-115 7300H Series Voice Terminals INSTALL MUSIC-ON-HOLD INTERFACE 2-117 FCC-Registered Music Source Interface 2-117 2-119 Non-FCC Registered Music Source Interface INSTALL EXTERNAL ALERTS 2-120 2-121 INSTALL RECORDED DELAY ANNOUNCEMENT 2-121 INSTALL DICTATlON SYSTEM INTERFACE INSTALL PAGING SYSTEM INTERFACE 2-121 Direct Connection to TN763 Auxiliary Trunk CP 2-122
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MAKE POOLED MODEM TEST CALL . . . . 3-11 TEST TRANSFER TO DATA . . . . ... . . . 3-11 EXTERNAL ALERT (NIGHT SERVICE) 3-12 TEST TEST DICTATION SYSTEM ACCESS 3-13 3-13 PAGING INTERFACE TEST 3-14 MUSIC-ON HOLD TEST 3-15 EMERGENCY TRANSFER TEST 3-16 TOUCH-TONE RECEIVERS TEST MAINTENANCE 4-1 EQUIPMENT NEEDED Precautions 4-4 GENERAL INFORMATION 4-4 System Errors and Alarms 4-4 Emergency
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4-20 ROUTINE MAINTENANCE 4-20 Reseating and Replacing Circuit Packs 4-22 Removing and Restoring Power 4-23 Restarting the System 4-27 ERROR LOG 4-30 Accessing the Error Log From the SAT 4-32 ERROR MESSAGES 4-61 Clearing System-Detected Troubles 4-61 Complete System Failure 4-61 Common Control Trouble 4-63 Circuit Pack Trouble Frontplane Ribbon Connector Trouble (Release 1 4-64 Only) 4-64 Power Supply Trouble 4-69 Power Supply Protection Power Supply Replacement 4-70 4-71 Fan Assembly
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REFERENCES 5-1 ABBREVIATIONS AND ACRONYMS 6-1 APPENDIX A: System WiringTables A-1 A-1 Connector Pin Assignments A-1 System 25 Building Wiring B-1 APPENDIX B: Parts Listing C-1 APPENDIX C: System Additions or Changes Evaluate Cabinet Unit Power Load C-1 Add Circuit Pack C-2 Add Cabling C-3 C-5 Set Option Switches on TN760B CP Replace Circuit Pack C-7 Add Cabinet C-8 C-10 Add Termina C-11 Add Trunk Add Trunk—DSl Interface C-11 Replace Voice-Only Terminal With Voice/Data Terminal C-12 C-13
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APPENDIX F: Administration Error Messages F-1 G-1 GLOSSARY I-1 INDEX -viii-
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Figures Figure 2-1. 10 BEA U 2-5 617A Panel 2-7 Figure 2-2. Figure 2-3. SIP Adapters 2-9 Figure 2-4. 50A Fanning Strip 2-10 Figure 2-5. Splitter Cables 2-11 Figure 2-6. Octopus Cabl e 2-12 Figure 2-6a. 853B Adapter Cable 2-12 Figure 2-7. 2-14 Cable Labels Figure 2-8. Typical System 25 Floor Plan 2-17 Figure 2-9. AC Power Distribution—Multiple Cabinet System 2-21 Figure 2-10. Three-Cabinet System, Front View With Covers Removed 2-26 Figure 2-11. Position of Shorting Plugs on CPU/Memory Circuit P
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Figure 2-37. Stand-Alone Voice Terminal Connections 2-90 Figure 2-38. Stand-Alone Remotely Powered Voice Terminal Connections 2-91 Figure 2-39. Single-Line Terminal/ADU Connections 2-93 Figure 2-40. 7300H Series Terminal/ADU Connections 2-94 Figure 2-41. DS1 to D4 Connections for Off-Premises Stations 2-97 Figure 2-42. Local Powering of an ADU 2-99 Figure 2-43. Remote Powering of an ADU (Optional) 2-100 Figure 2-44. MADU to Host Computer or Termina
