Specifications

December 2008 Page 5–17
Chapter 5. Alternate Path Mode (APM)
5
SUSPECTED
FAILURE
Maintenance
Module Failure
FOCUS
Transceiver
Pulled or Failed
FOCUS
FRAMER
Module Failure
EXPECTED TARGETS
Non volatile Ram Error
Digital Cross Point Error
Maintenance Module
Failure #1 (PIO failed)
Maintenance Module
Failure #2 (HSCC chip)
Transceiver 1 Bad
Out of sync error on
XCVR
No transceivers detected
FRAMER Module Failure
EXPECTED ERROR
COUNT ACTIVITY
Undetermined
CRC Error Counts, Sync
Alarms, and Low Signals,
constantly changing at
receive side of the failure
and only Yellow alarms
occurring at the transmit
side of the fiber in
question.
CRC Error Counts, Sync
Alarms, and Low Signals,
constantly changing on
both sides of the trans-
ceiver.
FURTHER TEST
TO PERFORM
Visually inspect chassis.
Verify status LED of all
common equipment::
Maintenance Module, T1,
XCVR-1, XCVR-2,
PWR_MAIN, PWR-
STANDBY LEDs should
be Green.
Visually inspect chassis.
Verify status LED of all
common equipment::
Maintenance Module, T1,
XCVR-1, XCVR-2,
PWR_MAIN, PWR-
STANDBY LEDs should
be Green.
Visually inspect chassis.
Verify status LED of all
common equipment::
Maintenance Module, T1,
XCVR-1, XCVR-2,
PWR_MAIN, PWR-
STANDBY LEDs should
be Green.
Table 5–5. Alternate Path Mode Failure Analysis (Continued).