Avaya 03-300430 User Manual

h. Error Type 1025: Processor/Tone-Clock circuit on-board maintenance has detected one or 

more clock slips, timing differences between its internal reference source and the 
synchronization signal provided by the master Tone-Clock. Although no clock slip errors are 
expected during normal operation, both manual and automatic interchanges of Tone-Clock 
circuit, synchronization references, and PNCs could result in clock slip counts.

If Error Type 1281 also is logged for the same Tone-Clock circuit, it is related to this problem 
and should be corrected first. Otherwise, continue with the following procedure.

1. Use test tone-clock location, and examine the results of Test #149 to see if slip 

errors still appear. If no new slip errors are reported, and if these errors are not causing a 
TDM-CLK alarm, they may be ignored. Use test tone-clock location long 
clear to clear the errors.

2. Otherwise, enter display errors, 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 

3. If Error Type 1025 errors persist, see 

i. Error Type 1281:

 

the Processor/Tone-Clock circuit has detected a loss of timing signal from 

the system’s synchronization reference. The Processor/Tone-Clock circuit has switched 
synchronization references.

1. Resolve any errors logged against the SYNC or STRAT-3 MOs.

2. See 

on page 2143 maintenance, if the error is not 

resolved by step 1.

 

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.

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

3073 to 3160

DS1C Circuit Pack

DS1C-BD

3329