363-206-305
Circuit Pack Descriptions
7-74
Issue 3 June 2000
Control Functions
7
The major control functions of the 22-type circuit packs are as follows:
■
Process transport overhead
■
Store inventory information (
CLEI
code, date of manufacture, etc.)
Maintenance Signal Functions
7
The major maintenance signal functions of the 22-type circuit packs are as
follows:
■
Insert STS-1 path AIS
■
For 22-type, insert and detect OC-3/IS-3 line AIS
■
Insert path unequipped signal
■
Insert and detect line FERF
■
For 22-type, detect OC-3/IS-3 line failures (LOS, LOF, AIS, and BER)
■
For 22-type, detect OC-3/IS-3 line signal degrade BER.
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