The provisioned channel could not be detected at a Wavelength Tracker detect point. The
channel is either missing, operating at a power that is outside the detectable range, or
wavekeys are not being correctly applied at the source OT/SVAC. Assuming that the
Wavelength Tracker information is correctly provisioned, this alarm may be raised if:
• the channel is not launched
• the received channel power is outside of the detectable power sensitivity range.
• the intra-node fiber connections do not match the physical topology.
• the fiber is damaged.
This alarm can also be raised in the following circumstances:
• the OT or SVAC fails to encode the correct wavekeys
• a card capable of wavekey decoding is faulty
Severity Critical
Service affecting? Yes
Applicability AHPHG, AHPLG, ALPHG, ALPFGT, AM2017B, AM2125A,
AM2125B, AM2325B, OSCT
Corrective Action
NOTICE
Service-disruption hazard
A cold reset, reseat, or replacement of a card is service impacting if the card is currently
carrying services. To determine if any services are currently carried over a card, perform
the procedure “Reseating a Card” (p. 3-19).
If
there are services currently carried over the card, it may be best to wait for a
maintenance window before resetting, replacing, or reseating the card.
At the end of each step wait to see if the fault clears. If not, continue with the next step.
...................................................................................................................................................................................................
1
Perform the procedure “Path Power Trace” (p. 3-8) to identify the probable network
trouble point for the service. Resolve issues/alarms at the trouble point. If the alarm
originates on the NE where the service enters the network, ensure that the OT or SVAC is
fibered to the correct port on the OMD or CWR8. The OT or SVAC may be connected
directly to the OMD or CWR8 or through another OT or SVAC card.
Trouble-clearing procedures
LOS-OUT
LOS-OUT (Outgoing Loss of Signal) and (Outgoing Channel
Absent)
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2-170
1830 PSS-36/PSS–32/PSS-16/PSS-4
8DG60888CAAA Release 3.6.0 and 3.6.1
Issue 1 June 2011
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