TDM-CLK (TDM Bus Clock)
Issue 4 May 2002
10-1733 555-233-123
TDM Bus Clock Parameter Update Test (#151)
This test updates the following internal parameters on the Tone-Clock circuit pack:
■ Disable in-line duplication status messages.
■ Disable in-line subrate frame maintenance messages (TN768, TN780
only).
■ Set the PPM threshold at 60 PPM for TN768 and TN780. Set the PPM
threshold at 85 PPM for TN2182.
■ Enable PPM threshold switching
■ Set the number of slips to trigger loss of signal - currently 30 per 5
millisecond period
■ Enable the on-board synchronization switching algorithm (see above)
■ Enable holdover operation (TN2182 only).
This is not a test and will always pass without identifying or reporting any
Tone-Clock circuit pack errors
Table 10-639. TEST #151 TDM Bus Clock Parameter Update Test
Error
Code
Te s t
Result Description/Recommendation
ABORT Internal System Error
FAIL Internal System Error
1. Retry the command at 1-minute intervals a maximum of
5 times.
PASS The Tone-Clock circuit pack parameters have been
successfully updated.
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