Lucent Technologies DDM-2000 OC-3, Руководство пользователя и обслуживания

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363-206-285 Detailed Level Procedure:
DLP-510
Issue 2, February 2000 Page 8 of 8
DDM-2000 OC-3 M
ULTIPLEXER
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.
DLP-523