TAP-101 : Trouble Clearing 363-206-285
Page 9 of 10 Issue 2, February 2000
DDM-2000 OC-3 MULTIPLEXER
21. Indications are that there is an unprotected failure or removal of a MXRVO(s)
or DS3(s) circuit pack at the far-end associated with the identified OLIU slot at
the near-end. Determine location of the circuit pack(s) from office records.
22. If circuit packs are removed, determine the reason the circuit packs were
removed. If the same circuit pack is to be reinserted and no switch settings are
changed, reinstall the circuit pack. If the circuit pack was removed and switch
settings changed, reinstall the circuit pack and momentarily depress the
UPD/INIT buttonontheSYSCTL or use the upd command. If the circuit pack
is not to be reinserted, momentarily depress the UPD/INIT button on the
SYSCTL or use the upd command to remove the circuit pack from the
inventory.
23. 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
24. STOP. YOU HAVE COMPLETED THIS PROCEDURE.
25. If the source address is a function unit slot, the likely cause of trouble is a
failure of the equipment at the far end of the EC-1 line (towards the STSX) or
the near-end STS1E circuit pack. Replace STS1E circuit pack [DLP-523].If
trouble does not clear, issue a trouble report of equipment failure at the far
end.
If the source address is an OLIU slot, the likely cause of trouble is a failure of
the far-end STS1E circuit pack associated with the identified STS-1 signal.
Determine location of the STS1E circuit pack from office records or use the
rtrv-crs-( ) commands to trace back through the STS1/VT1.5
cross-connections associated with the identified STS-1 signal. Replace
far-end STS1E circuit pack.
Reference: DLP-523
26. STOP. YOU HAVE COMPLETED THIS PROCEDURE.
27. Replace OLIUs at far end that are associated with the Source Address of
the inc. OC3 line AIS, inc. OC12 line AIS,orinc. OC1 line AIS
alarm message.
Reference: DLP-523
28. STOP. YOU HAVE COMPLETED THIS PROCEDURE.
DLP-523
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