inc. STSN LOP
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inc. STSN LOP
The system has detected a loss-of-pointer (LOP) condition. A valid
STS-N pointer could not be found for eight consecutive frames in the
identified STS-N signal.
Alarm Data
Value/Meaning
Reported Alarm
Level(s)
Critical (CR), Minor (MN)
AID (type)
STS-3c Ring Channel (Path)
STS-1 Ring Channel (Path)
Date
month/day/year that condition was detected
Time
hour:minute:second that condition was detected
Probable Cause
LOP
Effect on
Service
CR = SA
MN = NSA
Alarm Entity
Type
STS3C
STS1
Description
inc. STS3C LOP
inc. STS1 LOP
Likely Cause
If this condition occurs on only one OC-N line,
the likely cause is failure of an OC-N circuit pack
at the near end or far end of the line. If the
condition affects the same pointer in both OC-N
lines of an OC-N interface, the cause could be
unprotected failure of an STS cross-connected
circuit pack in the adjacent upstream network
element or cross-connection mismatch between
STS-N.
An unprotected line/port carrying service failed:
CR (SA). A protected line/port failed: MN (NSA).
Visible
indication
Lighted
CR/MJ
or
MN/ABN
LED on SYSCTL
faceplate a flashing
FAULT
LED on the alarmed
circuit pack.
Action
Proceed to
Alarms, conditions, and error messages
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365-372-333 R2.1
Issue 4, June 2005
Lucent Technologies
3 - 5 7
