Avaya S8700 - Page 2337

TDM-CLK (TDM Bus Clock)
Issue 1 May 2002
8-1615555-233-143
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
Tes t
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 ‘‘Troubleshooting Approach’’ in the ‘‘SYNC (Port-Network
Synchronization)’’ 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.
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