DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126
Issue 4
June 1999
Maintenance Object Repair Procedures
9-1708TDM-BUS (TDM Bus)
9
6. Run
test tdm P
to determine if the TDM Bus fault is still present. If none of
the TDM Bus tests fail, the procedure is completed.
7. If the TDM Bus fault is still present, the suspect circuit pack was not the
cause of the TDM Bus failure. Do the following:
a. Remove the replacement circuit pack that was just inserted and
replace it with the previously suspected circuit pack.
b. Repeat Procedure 3 for the next circuit pack on the list for this
procedure.
If Procedure 3 fails to identify the cause of the problem, go to Procedure 4.
Procedure for PPN with Duplicated SPE or
EPN 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
or not circuit packs are causing problems on the TDM Bus when they are in
active mode or when they are in standby mode or both. The procedure utilizes
SPE interchange in the PPN, or a PNC interchange in the EPN. If the TDM Bus
fault disappears after the interchange takes place, the newly standby MSSNET
(PPN), or Expansion Interface (EPN), 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 (PPN Procedure)
1. If performing this procedure for a PPN carrier, execute
status
port-network
to determine which SPE is currently active. Run
reset
system interchange
to make the currently active SPE standby.
2. Run
test tdm P
to determine if the TDM Bus fault is still present.
3. If the TDM Bus fault is gone, replace the formerly active MSSNET circuit
pack.
4. Run
reset system interchange
again to get the new MSSNET circuit pack
on the active SPE.
5. Run test tdm P to determine if the TDM Bus fault is still present.
6. If the TDM Bus fault is still present, replace the new MSSNET circuit pack
with the original suspect circuit pack, and continue on to Part 3.
7. If the TDM Bus fault has disappeared, the procedure is complete.
Part 2 (EPN Procedure)
1. If doing this procedure for an EPN carrier, execute the status pnc
command to determine which PNC is currently active. Run reset pnc
interchange to make the currently active PNC standby.
