ATM-SYNC (ATM Synchronization)
Issue 1 May 2002
8-269
555-233-143
For Simplex Tone-Clock circuit packs in the master port network:
replace the primary and secondary (if administered) DS1 Interface
circuit packs.
4. Investigate any other SYNC errors.
f. Error Type 2049: the ATM Expansion Interface circuit packs have errors
that affect synchronization. Test the ATM Expansion Interface circuit pack
with the test board UUCSS command.
This error is cleared by a “leaky bucket” strategy and takes up to one hour
to clear (leak away) the error counter once it is cleared.
g. Error Types 1, 257, and 513: noise on the DS1 line can cause transient
alarms on synchronization. Therefore, when a synchronization problem
occurs on Error Types 1, 257, or 513, a WARNING alarm is first raised for
15 to 20 minutes before the alarm is upgraded to a MINOR or MAJOR
alarm.
System Technician-Demanded Tests:
Descriptions and Error Codes
Always investigate tests in the order presented below when inspecting errors in
the system.
Test Synchronization Test (#417)
This test updates all the Synchronization Maintenance component circuit packs
with the correct information regarding their role in providing synchronization for
the system. All the Tone-Clock, ATM Expansion Interface, DS1 Interface, and
UDS1 Interface circuit packs in the system are updated through this test. This test
either passes or aborts.
Order of Investigation
Short Test
Sequence
Long Test
Sequence
D/ND
1
1.
D = Destructive, ND = Non-destructive
Test Synchronization test (#417)
X
X
ND
Summary of Contents for S8700 Series
Page 50: ...Maintenance Architecture 555 233 143 1 26 Issue 1 May 2002 ...
Page 74: ...Initialization and Recovery 555 233 143 3 12 Issue 1 May 2002 ...
Page 186: ...Alarms Errors and Troubleshooting 555 233 143 4 112 Issue 1 May 2002 ...
Page 232: ...Additional Maintenance Procedures 555 233 143 5 46 Issue 1 May 2002 ...
Page 635: ...status psa Issue 1 May 2002 7 379 555 233 143 status psa See status tti on page 7 406 ...
Page 722: ...Maintenance Commands 555 233 143 7 466 Issue 1 May 2002 ...