Alarm analysis, Spare bits – EXFO IQS-8100 Series Transport Blazer for IQS-600 User Manual
Page 398
PDH Tabs
384
IQS-8100 Series Transport Blazer
E2/8M RX
Alarm Analysis
Note: Only AIS is available when the framing is set to Unframed.
³
LOF (Loss Of Frame): The LOF alarm indicates that four consecutive
incorrect frame alignment signals have been received.
³
RAI (Remote Alarm Indication): The RAI alarm is declared when bit 11
of a framed E2 is set to “1”.
³
AIS (Alarm Indication Signal): The AIS alarm is declared when an
unframed all-ones signal is received.
Spare Bits
Note: Spare Bits are not available when Framing is set to Unframed.
G.742 Bit 12 represent Bit 12 from Timeslot 1, 2, 3 and 4 respectively.
Possible values are 0 and 1.
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