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TDM-CLK (TDM Bus Clock)
Issue 1 May 2002
8-1605
555-233-143
See
‘‘SYNC (Port-Network Synchronization)’’ on page 8-1509
for more details
about the escalation plan. There is a strong interdependency among the DS1
Interface circuit pack’s Maintenance, Synchronization Maintenance, and TDM Bus
Clock Maintenance MOs.
See
‘‘TONE-BD (Tone-Clock Circuit)’’ on page 8-1659
for a discussion of the
relationship of Tone-Clock circuits with the various reliability options.
Tone-Clock
Role
Synchronization
Facilities
Initial External
Synchronization
Source
Backup External
Synchronization
Source
Internal
Source
MASTER
Stratum-3 clock
Source “A”
Source “B”
Local
oscillator
DS1 Primary and
Secondary
DS1 Primary
DS1 Secondary
DS1 Primary Only
DS1 Primary
None
No External Source
None
None
SLAVE
PNC Duplication
Active EI
Standby EI
No PNC Duplication
Active EI
None
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 ...