Demand test descriptions and error codes - Avaya Support

TDM-BUS (TDM Bus)
If Procedure 3 fails to identify the cause of the problem, go to Procedure 4: Isolating TDM-Bus
Failures to Carriers.
S8700-series Fiber-PNC
Procedure for PN with Duplicated PNC
In this type of configuration, the test procedure is made up of several independent parts. In a
duplicated system, it is desirable to investigate whether circuit packs are causing TDM-bus
problems when they are in active mode, in standby mode, or both. The procedure utilizes a
PNC interchange in a PN. If the TDM-bus fault disappears after an interchange takes place, the
newly standby Expansion Interface (PN), is suspect and should be replaced. If the problem still
exists, the Tone-Clocks are then interchanged. If the TDM-bus failure then disappears, the
newly standby Tone-Clock is suspect and should be replaced. If the TDM-bus problem still
exists, then the procedure begins diagnostics on individual circuit packs and backplane pins.
Part 1 (PN Procedure)
1. Execute status pnc to determine which PNC is currently active.
2. Run reset pnc interchange to make the currently active PNC standby.
3. Run test tdm P to determine whether the TDM-bus fault is still present.
If the TDM-bus fault is gone, replace the formerly active Expansion Interface circuit pack.
4. Run reset pnc interchange again to activate the PNC where the new Expansion
Interface circuit pack resides.
5. Run test tdm P to determine whether the TDM-bus fault is still present.
If the TDM-bus fault is gone, the procedure is finished.
If not, replace the new Expansion Interface circuit pack with the originally suspected circuit
pack, and continue with Part 2.
Part 2
1. Run set tone-clock to make the currently active Tone-Clock standby.
2. Run test tdm P to determine whether the TDM-bus fault is still present.
If the TDM-bus fault is gone:
a. Replace the formerly active Tone-Clock circuit pack.
b. Run set tone-clock again to make the new Tone-Clock circuit pack active.
c. Run test tdm P to determine whether the TDM-bus fault is still present.
If the TDM-bus fault is still present, replace the new Tone-Clock circuit pack with the
originally suspected circuit pack, and continue with Part 3.
Issue 5 May 2009 957