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DEFINITY Enterprise Communications Server Release 6
Maintenance for R6vs/si
555-230-127
Issue 1
August 1997
Maintenance Object Repair Procedures
Page 10-1330TDM-BUS (TDM Bus)
10
TDM Bus Clock Parameter Update Test (#151)
This action updates the Tone-Clock internal circuit pack parameters. 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.
PASS The Tone-Clock circuit pack does not detect timing any PPM errors. This
indicates that the external synchronization timing source is valid or that the
system synchronization reference is a Tone-Clock circuit pack. The status
synchronization command should be used to verify that the desired
synchronization reference is providing timing for the system.
Table 10-461. TEST #151 TDM Bus Clock Parameter Update Test
Error
Code
Test
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.
Continued on next page
Table 10-460. TEST #150 TDM Bus Clock PPM Inquiry Test — Continued
Error
Code
Test
Result Description/ Recommendation
Continued on next page