Lucent Technologies DDM-2000 OC-3, User & Service Manual

Page: 2012 / 2536

363-206-285 Trouble Clearing:
TAP-112
Issue 2, February 2000 Page 14 of 16
DDM-2000 OC-3 M
ULTIPLEXER
40. If the MXRVO or DS3 circuit packs have not been removed, replace the
MXRVO or DS3 circuit pack associated with the identified OLIU slot in the
alarm message.
Reference: DLP-523
41. STOP. YOU HAVE COMPLETED THIS PROCEDURE.
42. In alarm report, is there any indication of OLIU or fiber trouble at near end or
far end such as
inc. OC3 FERF
or
inc. OC12 FERF
alarm message?
If YES, then continue with Step 43.
If NO, then proceed to Step 45.
43.
NOTE:
If there is a DCC failure, a remote login to the shelf connected through
the
Source Address
cannot be done. The
rtrv-alm:
,
rtrv-map-network:
, and
rtrv-map-neighbor:
commands can be
used to check for DCC failure for MAIN (and FUNCTION UNITS A, B, or
C). Also, use
rtrv-fecom:
command to see if "fecom" has been
disabled.
Note
Source Address
of DCC channel failure. Check optical fibers
connected through the
Source Address
per local procedures. If no trouble
found, replace near-end OLIU first then far-end OLIU.
Reference: DLP-523
44. STOP. YOU HAVE COMPLETED THIS PROCEDURE.
45. Use CIT and
reset
command to reset SYSCTL at the near end or unplug and
reseat the SYSCTL.
46. Is the FAULT LED on the OHCTL circuit pack still flashing (
section DCC
channel failed
)?
If YES, then continue with Step 47.
If NO, then STOP. YOU HAVE COMPLETED THIS PROCEDURE.
DLP-523