Lucent Technologies Release 7 9-1728TDM-CLK (TDM Bus Clock) , How to Replace the Tone-Clock

DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126 Issue 4 June 1999
Maintenance Object Repair Procedures
9-1728TDM-CLK (TDM Bus Clock)
9
1 FAIL This error means the Tone-Clock circuit pack framing verification firmware
reports an error in the clock synchronization signal coming into this Port
Network.
1. If the Tone-Clock circuit pack reporting the problem is a master clock, then
the system synchronization reference is providing a bad timing source.
Refer to SYNC (Synchronization) or STRAT-3 (Stratum 3 Clock)
Maintenance documentation to change the system synchronization
reference.
2. If the Tone-Clock circuit pack is a slave clock, then the EI to which it is
listening is providing a bad timing source. Follow the diagnostic
procedures specified for TDM-CLK Error Code 2305.
3. If no problem can be found with the incoming synchronization signal,
replace the Tone-Clock circuit pack. See
How to Replace the Tone-Clock
Circuit Pack
in the TONE-BD section.
2 FAIL This error indicates that Tone-Clock circuit pack has inacc urately detected loss
of signal on the incoming synchronization timing source.
4
or
8
FAIL The local oscillator on the Tone-Clock circuit pack has failed.
16
or
32
FAIL The circuitry on the Tone-Clock circuit pack used to detect synchronization
timing errors has failed.
1. Errors 2, 4, 8, 16, and 32 indicate that there is poor synchronization
between port networks and external facilities. It may be noticeable to the
customer in the form of errors in data communications. The Tone-Clock
circuit pac k is defective. See
How to Replace the Tone-Clock Circuit Pack
in the TONE-BD section.
64 FAIL This message is only sent when an uplink message has reported the loss of
valid synchronization timing information coming into this Port Network. It has
been reported in TDM-CLK Error Log entries; one or more of 1025, 1281, 1537,
2049 and 2305.
1. Resolve the errors indicated. No separate corrective action is required.
Table 9-646. TEST #148 TDM Bus Clock Circuit Status
Inquiry Test — Continued
Error
Code Test Result Description/ Recommendation
Continued on next page