Maintenance-Object Repair Procedures
555-233-143
8-1530 Issue 1 May 2002
■ Replace the active Expansion Interface circuit pack in the
master port network.
■ In a CSS configuration, replace the Switch Node Interface
circuit pack connected to the active Expansion Interface
circuit pack in the master port network. The list fiber-link
command can be used to determine the Switch Node
Interface circuit pack that is connected to the active
Expansion Interface circuit pack in the master port network.
■ If the system’s synchronization reference is a Tone-Clock
circuit pack or a Stratum-3 clock, follow normal escalation
procedures.
If the system’s primary synchronization reference is a DS1
Interface circuit pack, assign a different DS1 Interface as the
primary reference. If the problem persists and any slip errors
remain, follow the procedures described in the
troubleshooting section above.
6. For unduplicated Tone-Clock circuit packs in a slave port network:
■ Enter set tone-clock UUC command to switch the
Tone-Clock in the master port network.
■ If the problem still persists, enter set tone-clock UUC to
switch the Tone-Clocks in the master port network back to
their previous configuration.
Enter the test Tone-Clock UUC long command to test the
Tone-Clock in the master and slave port networks.
Check the Error Log for TDM-CLK errors and verify that TDM
Bus Clock Circuit Status Inquiry test (#148) passes.
If Test #148 fails with an Error Code 2–32, see ‘‘TDM-CLK
(TDM Bus Clock)’’ to resolve the problem. If not, continue
with the following steps.
■ If the master and slave Tone-Clock circuit packs do not fail
TDM Bus Clock Test #150 (TDM Bus Clock PPM Inquiry
test), replace the Expansion Interface circuit packs that have
EXP-INTF error 2305.
■ If the system synchronization reference is a Tone-Clock
circuit pack and the master Tone-Clock circuit pack fails TDM
Bus Clock Test #150, follow the steps listed in “TDM-CLK” to
replace the master Tone-Clock circuit pack.
■ If the system’s synchronization reference is a DS1 Interface
circuit pack and the master Tone-Clock circuit pack fails TDM
Bus Clock test (#150), the primary or secondary (if
administered) synchronization references are not providing
valid timing signals for the system.
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