Fujitsu FLM 150 ADM, Maintenance And Trouble Clearing

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3.46: LOM
Issue 9, May 1999 FNC and FNC Customer Use Only Vol. ll, Page 480.3-27
Maintenance and Trouble Clearing
FJTU-320-515-480
3.46 LOM
3.47 LOP
Table 3-44: LOM (Loss of Message)—Transient Condition
AID
Type
Direction Probable Cause Suggested Corrective Action
SYNCIN NA A loss of synchronization
message is detected. • Verify that synchronous status messaging is
properly configured.
• Make sure a TCA-ENH unit is installed.
• Check the upstream ADM for optical channel
unit failure or removal.
• Check the fiber link and repair or replace as
required.
Table 3-45: LOP (Loss of Pointer)—Alarm Condition
AID
Type
Direction Probable Cause Suggested Corrective Action
EC1 TRMT/RCV An STS-1 loss of
pointer on the
EC-1 tributary
interface • Verify that the actual cross-connect entered for this
facility is an STS-1 cross-connect.
• Verify that all upstream cross-connect levels are set to
STS-1.
• Refer to the Turn-Up and Operation practice,
FJTU-320-515-270, Section 6.2, Adding or Changing
Time-Slot Assignments in UPSR Applications, and
Section 2, for the appropriate ring turn-up procedure.
OC3 TRMT/RCV A loss of pointer
in the tributary
OC-3 signal • Verify that the actual cross-connect entered for this
facility is an STS-1 cross-connect.
• Verify that all upstream cross-connect levels are set to
STS-1.
• Refer to the Turn-Up and Operation practice,
FJTU-320-515-270, Section 6.2, Adding or Changing
Time-Slot Assignments in UPSR Applications, and
Section 2, for the appropriate ring turn-up procedure.
OC12 A loss of pointer
in the tributary
OC-12 signal • Verify that the actual cross-connect entered for this
facility is an STS-1 cross-connect.
• Verify that all upstream cross-connect levels are set to
STS-1.
• Refer to the Turn-Up and Operation practice,
FJTU-320-515-270, Section 6.2, Adding or Changing
Time-Slot Assignments in UPSR Applications, and
Section 2, for the appropriate ring turn-up procedure.
d6164
RCV
OC-3/
OC-12
DROPPED
SIGNAL
150 ADM