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DEFINITY Enterprise Communications Server Release 6
Maintenance for R6vs/si
555-230-127
Issue 1
August 1997
Maintenance Object Repair Procedures
Page 10-1321TDM-BUS (TDM Bus)
10
g. These errors indicate communication problems. On a High or Critical
Reliability system, TDM Bus maintenance may switch the Control Channel
bus and/or Tone bus to the other bus. Test the TDM Bus via the test tdm P
command and follow the procedures according to the error codes
reported from the test.
The aux data value shows the Angel ID number for which a downlink
message was lost.
System Technician-Demanded Tests:
Descriptions and Error Codes
Always investigate tests in the order presented in the table below when
inspecting errors in the system. By clearing error codes associated with the
Control Channel Test
, for example, you may also clear errors generated from
other tests in the testing sequence.
Idle Time Slot Test on TDM Bus A or B (#294)
The Idle Time Slot Test detects noisy time slots on the bus and takes them
out-of-service. The Tone Detector circuit pack is told to listen to idle time slots
and if it detects any noise on a time slot, it returns a failure. At the end of the test,
any out-of-service time slots are retested to see if they are still noisy and restored
to service if they are idle. After all the time slots have been tested, maintenance
counts the number of bad time slots and reports the number to the technician in
the error code field. No more than 220 time slots are taken out-of-service on one
bus, and no more than 300 are taken out-of-service on both buses at one time.
1. D = Destructive; ND = Nondestructive
Order of Investigation
Short Test
Sequence
Long Test
Sequence D/ND
1
Control Channel Test on the Control
Channel Bus (#296) X X ND
Digit Detection Test on the Non-Control
Channel Bus (#297) X X ND
Idle Time Slot Test on TDM Bus A (#294) X X ND