MAINTENANCE
Memory (ZTN81 [RIV7] or ZTN127 [RI V2]J: The red LED on this CP lights
when power is applied and goes dark upon successful completion of the
ROM checksum test initiated by the Call Processor CP. Failure is indicated
by a steadily lighted red LED.
Call Processor [ZTN82 (R1V1) or ZTN128 (R1V2)]: The green LED on this
CP lights when power is applied and flashes during normal operation. When
the system resets itself, the green LED lights and then goes dark for a few
seconds while the Call Processor performs its self-tests. Once testing is
complete, the green LED flashes and the Call Processor resets all port CPs.
Failure is indicated when the green LED remains steadily lighted or dark.
CPU/Memory [ZTN129 (R2V1) or ZTN130 [R3]; The green LED on this CP
lights when power is applied and flashes during normal operation. When the
system resets itself, the green LED lights and then goes dark for a few
seconds while the CP’s call processor performs its self-tests. Once testing is
complete, the green LED flashes and the call processor resets all port CPs.
Failure is indicated when the green LED remains steadily lighted or dark.
Port Circuit Packs; The red LED on port CP lights during power-up testing
and goes dark upon successful test completion. The green LED lights when
translations have been loaded and remains lighted during normal operation.
The red LED remains lighted for any port CP that fails the start-up test or
fails while in use. The amber LED lights when any port on the CP is in use.
N o t e : A red LED indicator immediately lights an alarm at the
console for all port CPs except the TN767. Because of the
sensitivity of this CP to noise and transients, a 15 minute
delay exists in lighting the console LED to allow the problem
to correct itself. This will help eliminate service calls for
transient problems caused by weather or noise.
Clock/Service Circuit (ZTN85 or ZTN131 [R3]): The red LED on this CP
lights during self-testing and goes dark upon successful test completion. The
amber LED flashes during normal operation (indicating that the clock
generator is active) and remains lighted when any tone receiver on the CP is
in use. When the amber LED is dark, the CP is not translated or a problem
exists.
The green LED lights when translations have been loaded and
remains lighted during normal operation.
November 1995
4-5
Summary of Contents for Network Adapter 25
Page 1: ...AT T AT T System 25 Installation and Maintenance Manual 555 540 103 B November 1995 ...
Page 18: ...APPENDIX F Administration Error Messages GLOSSARY I N D E X F 1 G 1 I 1 viii ...
Page 31: ...INSTALLATION MOUNTING CENTERS WHEN FLANGES ARE OVERLAPPED Figure 2 2 617A Panel 2 7 ...
Page 33: ...INSTALLATION Z21OA1 ADAPTER Y ADAPTER WP90851 L1 858A ADAPTER Figure 2 3 SIP Adapters 2 9 ...
Page 50: ...INSTALLATION Figure 2 10 Three Cabinet System Front View With Covers Removed 2 26 ...
Page 51: ...INSTALLATION Figure 2 11 Position of Shorting Plugs on CPU Memory Circuit Pack 2 27 ...
Page 72: ...INSTALLATION UPPER ADAPTER MOUNTING CLIP Figure 2 18 Mounting Adapters ...
Page 85: ...INSTALLATION 2 61 ...
Page 92: ...INSTALLATION 2 68 ...
Page 103: ...INSTALLATION Figure 2 32 10B Emergency Transfer Unit 2 78 ...
Page 104: ...INSTALLATION Figure 2 33 Emergency Transfer Unit Connections 2 79 ...
Page 109: ...INSTALLATION Figure 2 35 Attendant Console With DXS Console 2 84 ...
Page 146: ...INSTALLATION 2 119b This page intentionally left blank November 1995 ...
Page 153: ...INSTALLATION This page intentionally left blank 2 124b November 1995 ...
Page 223: ...MAINTENANCE Figure 4 2 Clearing Supply Troubles Sheet 1 of 2 4 47 ...
Page 224: ...MAINTENANCE Figure 4 2 Clearing Power Supply Troubles Sheet 2 of 2 ...
Page 225: ...MAINTENANCE Figure 4 3 Clearing CO Trunk Troubles 4 49 ...
Page 226: ...MAINTENANCE Figure 4 4 Clearing 4 Wire Tie Trunk Troubles Sheet 1 of 4 4 50 ...
Page 227: ...MAINTENANCE Figure 4 4 Clearing 4 Wire Tie Trunk Troubles Sheet 2 of 4 4 51 ...
Page 228: ...MAINTENANCE Figure 4 4 Clearing 4 Wire Tie Trunk Troubles Sheet 3 of 4 4 52 ...
Page 229: ...MAINTENANCE Figure 4 4 Clearing 4 Wire Tie Trunk Troubles Sheet 4 of 4 4 53 ...
Page 231: ...Figure 4 6 Clearing Tie Trunk Troubles Sheet 1 of 5 4 55 ...
Page 232: ...MAINTENANCE 6 7 8 9 10 Figure 4 6 Clearing Tie Trunk Troubles Sheet 2 of 5 4 56 ...
Page 233: ...MAINTENANCE Figure 4 6 Clearing Tie Trunk Troubles Sheet 3 of 5 4 57 ...
Page 234: ...MAINTENANCE Figure 4 6 Clearing Tie Trunk Troubles Sheet 4 of 5 4 58 ...
Page 235: ...MAINTENANCE Figure 4 6 Clearing Tie Trunk Troubles Sheet 5 of 5 4 59 ...
Page 236: ...MAINTENANCE Figure 4 7 Clearing Paging Equipment Troubles ...
Page 250: ...MAINTENANCE Figure 4 9 System Cabinet Backplane Wiring Side Sheet 2 of 2 4 74 ...
Page 251: ...MAINTENANCE Figure 4 10 TDM Signal Designations on Cabinet Backplane 4 75 ...
Page 252: ...MAINTENANCE Figure 4 11 Power Designations on Cabinet Backplane 4 76 ...
Page 263: ...MAINTENANCE Figure 4 12 Clearing Virtual Facilities Troubles Sheet 1 of 3 ...
Page 264: ...MAINTENANCE Figure 4 12 Clearing Virtual Facilities Troubles Sheet 2 of 3 4 87 ...
Page 265: ...MAINTENANCE Figure 4 12 Clearing Virtual Facilities Troubles Sheet 3 of 3 4 88 ...
Page 271: ...MAINTENANCE Figure 4 13 Clearing Switched Loop Attendant Console Troubles Sheet 1 of 5 ...
Page 272: ...MAINTENANCE 4 13 Clearing Switched Loop 2 of 5 Console Troubles Sheet 4 95 ...
Page 273: ...MAINTENANCE Figure 4 13 Clearing Switched 3 of 5 Loop Attendant Console Troubles Sheet 4 96 ...
Page 274: ...MAINTENANCE 4 13 Clearing Switched 4 of 5 Console Troubles 4 97 ...
Page 321: ...APPENDIX E Administration Codes and Data This page is intentionally blank E 2 b ...