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Maintenance-Object Repair Procedures
555-233-143
8-342
Issue 1 May 2002
This Loop Around test runs a series of individual tests on the two B channels (B1
and B2) associated with the port. It is a collection of the following:
■
Loop Around test across the TDM Bus for B1.
■
Conference Circuit test for B1.
■
Loop Around test across the TDM Bus for B2.
■
Conference Circuit test for B2.
The tests are run in the above order. If one fails, the remaining tests in the
sequence are not executed. An error code is returned at that point.
This test is not executed for ABRI-PORT/ATT-PORT/LGATE-PT/ATTE-PT
because the B channels associated with the port are not used by ASAI or Avaya
adjuncts.
The dotted lines in
show how a Loop Around test is
performed for the B channels. The figure shows a terminal connected to a BRI
line board using a TN556. If a TN2198 is used the terminal would be connected to
a NT1, and the NT1 to the BRI board.
Figure 8-13.
Path of the BRI Port Local TDM Loop Around
Tone
Generator
Tone
Detector
BRI Line
Board
TDM Bus
Содержание S8700 Series
Страница 50: ...Maintenance Architecture 555 233 143 1 26 Issue 1 May 2002 ...
Страница 74: ...Initialization and Recovery 555 233 143 3 12 Issue 1 May 2002 ...
Страница 186: ...Alarms Errors and Troubleshooting 555 233 143 4 112 Issue 1 May 2002 ...
Страница 232: ...Additional Maintenance Procedures 555 233 143 5 46 Issue 1 May 2002 ...
Страница 635: ...status psa Issue 1 May 2002 7 379 555 233 143 status psa See status tti on page 7 406 ...
Страница 722: ...Maintenance Commands 555 233 143 7 466 Issue 1 May 2002 ...
Страница 1121: ...CARR POW Carrier Power Supply Issue 1 May 2002 8 399 555 233 143 Figure 8 19 Power Distribution Unit J58890CH 1 ...
Страница 1447: ...E DIG RES TN800 reserve slot Issue 1 May 2002 8 725 555 233 143 E DIG RES TN800 reserve slot See ASAI RES ...
Страница 1735: ...LGATE AJ Issue 1 May 2002 8 1013 555 233 143 LGATE AJ See BRI SET LGATE BD See BRI BD LGATE PT See BRI PT ...
Страница 1846: ...Maintenance Object Repair Procedures 555 233 143 8 1124 Issue 1 May 2002 Figure 8 62 TN787 MMI MULTIMEDIA INTERFACE CIRCUIT PACK ...