ATT System 25 Maintenance Manual
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INDEX Software (Continued) Partitioning 4-3 Switched Services 4-1 System 4-1 Station Interconnect Panel 3-3 Problems 5-4 Stations Port Circuit Options 9-9 Status Indicators 2-3 Switch Description 3-3 Switched Services Software 4-1 Switches 2-4 Switching Network 3-8, 3-16 System Administration Terminal 2-4 System Alarms 2-2 System Errors 2-2 System Failures Total 5-3 System Hardware 3-1 System Resources Circuit Packs 3-51 System Software 4-1 System Troubles Clearing Specific 8-9 System Restarting 8-4 T TAE 3-5 TDM Bus 3-16, 4-5 Electrical Characteristics 3-19 Physical Characteristics 3-19 Terminal Equipment 3-7 Terminal Operations Manual 10-4 Terminal System Administration 2-4 Test Equipment 1-3 Test Points 2-4Tests Maintenance 2-5 Touch-Tone Receiver 9-3 Tie Trunk (TN760B) 3-45 Time-Keeping Troubles 9-2 Tip Ring Line (ZTN78) 3-33 Tone Detector (TN748) 3-54 Tools 1-3 Touch-Tone Receiver Test 9-3 Translations Restoring 7-4 Saving 7-2 Verifying 7-3 Trouble-Clearing Techniques 8-1 Troubles Backplane 8-18 Cabinet 8-18 Circuit Pack 8-11 Clearing User-Reported 9-1 Common Control 8-9 Data Line 9-11 DTU 9-1 ETU 8-26 Fan Assembly 8-17 Frontplane Ribbon Connector 8-12 General 2-1 MultipIe 9-12 Overheating 8-18 Power Supply 8-12 SAT 9-1 SMDR 9-1 System-Detected 8-1 Terminal (7300H Series) 9-4 Time-Keeping 9-2 Trunk 9-5 Undiagnosable 9-12 Voice Terminals 9-2 Voice Transmission 9-3 Wiring 9-2 Trunk Access Equipment 3-5 13-4
INDEX Trunk (Continued) Problems 5-4 Troubles 9-5 Trunks Port Circuit Options 9-9 U Undiagnosable Troubles 9-12 User Guides (700 Series) 10-4 V Voice Terminal Troubles 9–2 Voice Transmission Troubles 9-3 W Wiring Problems 5-4 Troubles 9-2 13-5