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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 10-1344TDM-CLK (TDM Bus Clock)
10
■ 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
Board Type Check Test (#574)
This test verifies that a Tone-Clock circuit pack administered with a Stratum 3
Clock source has code TN780
Table 10-468. 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 10-469. TEST #574 Board Type Check Test
Error
Code
Test
Result Description/ Recommendation
2012 ABORT Internal System Error
1. Retry the command at 1-minute intervals a maximum of 5 times.
ANY FAIL Stratum 3 Clock Synchronization is administered for the carrier in which this
Tone-Clock circuit pack resides, but the Tone-Clock does not have code
TN780.
1. If the Stratum 3 Clock option is incorrectly administered, remove it.
2. Otherwise, replace the circuit pack. See
How to Replace the
Tone-Clock Circuit Pack
in the TONE-BD section.
Continued on next page