User Guide

DEFINITY Enterprise Communications Server Release 5
Maintenance and Test for R5vs/si
555-230-123
Issue 1
April 1997
Maintenance Object Repair Procedures
Page 10-1414TDM-CLK (TDM Bus Clock)
10
2.Otherwise, enter the display errors command, and follow corrective
procedures for any other TDM-CLK, TONE-BD, SYNC, DS1C-BD,
EXP-INTF, SNC-BD, and SNI-BD errors logged, except for those in
the following table.
3.If 1025 errors persist, refer to SYNC Maintenance in this manual and
follow the procedures in the "Approach to Troubleshooting" section.
h. 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 maintenance
objects.
2.Refer to SYNC 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 all DS1 facilities.
i. The tone-clock circuit pack in the master port network was unable to
detect the incoming synchronization signal, but the other tone-clock was
able to detect the references. If the aux data is 0, the problem is with the
signal on the primary. If the aux data is 1, the problem is with the signal on
the secondary. The system should switch clocks in this situation.
1.If this error is against a PPN clock board and the system is using a
Stratum 3 clock, check the cabling that brings the stratum 3 signal
to this clock board.
2.Replace the current standby Tone-Clock circuit pack. See
How to
Replace the Tone-Clock Circuit Pack
in the TONE-BD section.
Error Log Entries for Slip Errors
Circuit Pack Name
Error Log
Name
Error Log Entry
for Slips
DS1 Interface DS1-BD 3073 to 3160
Expansion Interface EXP-INTF 2305
Switch Node Interface SNI-BD 1537
Tone-Clock TDM-CLK 1025
UDS1 Interface UDS1-BD 3073 to 3160
DS1C Circuit Pack DS1C-BD 3329