Lucent DDM-2000 OC-3 User And Service Manual page 802

363-206-285
Issue 2, February 2000
34. NOTE:
The line code parameter is not applicable to the TMUX circuit pack.
Check for line code (AMI/B8ZS) mismatch at near end and far end. If mismatch
is found, set line code [DLP-513] to correct value and repeat this test. If no
trouble is found, continue with the next step.
35. NOTE:
The dlc parameter is not applicable to the TMUX circuit pack.
In some releases, if dlc=yes as set by the set-t1 command, loopbacks are
not recognized (loopback not recognized) in this test. Use rtrv-t1
command to check if dlc=yes.
36. Is dlc set to yes?
If YES, then continue with Step 37.
If NO, then proceed to Step 38.
37. Use set-t1 command to temporarily set dlc=no and repeat this test. If the
test fails again, continue with the next step.
38. Has the DS1/DS1PM, TMUX, or T1EXT circuit pack that failed the test been
replaced?
If YES, then proceed to Step 41.
If NO, then continue with Step 39.
39. Replace the DS1/DS1PM, TMUX, or T1EXT circuit pack that failed the test.
Reference: DLP-523
40. Repeat this procedure for the DS1/DS1PM/TMUX circuit pack that failed.
41. Trouble may be in the DSX cross-connect wiring, T1 interface wiring,
VT1/STS1 cross-connections in the ring network, or the shelf backplane. Use
the rtrv-crs-( ) command to ensure proper VT1/STS1 cross-connections have
been made at each shelf in the ring for the DS1 being tested. If no trouble
found, check DSX cross-connect wiring, T1 interface, or backplane
connections. If other alarms or trouble indications are present, refer to
Trouble Clearing: IXL-001 to isolate the trouble. If no alarms or indications
are present and a CIT is available, use the RETRIEVE commands (for
example, rtrv-alm, rtrv-hsty, etc.) to check for other trouble indications.
42. STOP. YOU HAVE COMPLETED THIS PROCEDURE.
DDM-2000 OC-3 M
Detailed Level Procedure:
ULTIPLEXER
DLP-510
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