Lom; Lop - Fujitsu FLM 150 ADM Maintenance And Trouble Clearing

Maintenance and Trouble Clearing
FJTU-320-515-480
3.46

LOM

Table 3-44: LOM (Loss of Message)—Transient Condition
AID
Direction
Type
SYNCIN NA
3.47

LOP

AID
Direction
Type
EC1 TRMT/RCV
OC3 TRMT/RCV
OC12
RCV
150 ADM
OC-3/
OC-12
DROPPED
SIGNAL
Issue 9, May 1999
Probable Cause
A loss of synchronization
message is detected.
Table 3-45: LOP (Loss of Pointer)—Alarm Condition
Probable Cause
An STS-1 loss of • Verify that the actual cross-connect entered for this
pointer on the
EC-1 tributary
• Verify that all upstream cross-connect levels are set to
interface
• Refer to the Turn-Up and Operation practice,
A loss of pointer • Verify that the actual cross-connect entered for this
in the tributary
OC-3 signal
• Verify that all upstream cross-connect levels are set to
• Refer to the Turn-Up and Operation practice,
A loss of pointer • Verify that the actual cross-connect entered for this
in the tributary
OC-12 signal
• Verify that all upstream cross-connect levels are set to
• Refer to the Turn-Up and Operation practice,
FNC and FNC Customer Use Only
Suggested Corrective Action
• 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.
Suggested Corrective Action
facility is an STS-1 cross-connect.
STS-1.
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.
facility is an STS-1 cross-connect.
STS-1.
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.
facility is an STS-1 cross-connect.
STS-1.
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.
3.46: LOM
Vol. ll, Page 480.3-27