Maintenance Object Repair Procedure
555-233-142
8-1126 Issue 1 May 2002
2. Otherwise, enter the display errors command, and follow corrective
procedures for any other TDM-CLK, TONE-BD, SYNC, and
DS1C-BD, errors logged, except for those in Table 8-480.
3. If 1025 errors persist, see ‘‘SYNC (Port-Network Synchronization)’’
and follow the procedures in ‘‘Troubleshooting Approach’’.
f. Error Type 1281 This error is an indication that the Tone-Clock circuit
pack has detected a loss of timing signal from the system synchronization
reference. The Tone-Clock circuit pack has switched synchronization
references.
1. Resolve any errors logged against the SYNC or STRAT-13 MOs.
2. See ‘‘SYNC (Port-Network Synchronization)’’ maintenance, in the
“Approach to Troubleshooting” section, if the error is not resolved by
step 1
Error Type 1282
Indicates that the TN2182 tone-clock was
synchronized to a DS1 facility and that the reference frequency provided by
the DS1 drifted beyond a range that could be tracked by the TN2182.
Therefore the TN2182 is no longer synchronized to that DS1 reference. If
a second DS1 is available, the tone-clock may be synchronized to that
reference. If no secondary DS1 reference is available, the tone-clock will
run off of its internal clock. This may result in slips being reported by the
tone-clock and every DS1 facility.
Table 8-480. Error Log Entries for Slip Errors
Circuit Pack Name
Error Log
Name
Error Log Entry
for Slips
DS1 Interface DS1-BD 3073 to 3160
Tone-Clock TDM-CLK 1025
UDS1 Interface UDS1-BD 3073 to 3160
DS1C Circuit Pack DS1C-BD 3329
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