TDM-CLK (TDM Bus Clock)
Issue 1 May 2002
8-1615
555-233-143
TDM bus Clock PPM Inquiry Test (#150)
This test evaluates the quality of the synchronization source for the Tone-Clock
circuit.
Table 8-627.
Test #150 TDM bus Clock PPM Inquiry Test
Error
Code
Test
Result
Description / Recommendation
ABORT
The system could not allocate the necessary resources for the test.
1001
ABORT
The system could not allocate the necessary resources for the test.
1. Wait 1-minute, and retry the test.
255
ABORT
The test was not executed because the IPSI or Tone-Clock circuit pack was
using its local oscillator rather than synchronizing to an external source.
1. Verify that this IPSI or Tone-Clock circuit pack is expected to be the
synchronization source. If not, correct the synchronization information and
re-execute the test.
2000
ABORT
Response to the test request was not received within the allowable time period.
2100
ABORT
System resources required to run this test are not available.
1. Retry the command at 1-minute intervals up to 5 times.
Any
FAIL
The error code represents the rate (in Parts Per Million, or PPM) at which clock
slip errors have been detected on the incoming synchronization source since
the last PPM inquiry was sent to the IPSI or Tone-Clock circuit pack. A failure
of this test indicates that we are outside of Stratum-3 or Stratum-4 timing
specifications on the incoming timing source.
The error code is a variable amount ranging from 1 to 254.
1. If error 1537 is entered in the hardware error log against TDM-CLK, then
the board has switched timing sources. Follow the procedures associated
with hardware log error code 1537.
2. Otherwise, see
in the
section of this manual.
PASS
The IPSI or Tone-Clock circuit pack does not detect timing any PPM errors.
This indicates that the external synchronization timing source is valid or that the
system synchronization reference is an IPSI or Tone-Clock circuit pack. Use
the status synchronization command to verify that the desired
synchronization reference is providing timing for the system.
Continued on next page
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 ...