8081 Loss of frame alignment

Severity:	Object affected:	Object state:	Module/Unit:
Critical	TRE	Enabled	FIxx
Fault reason:	Instruction:
Field not used.	Framing error has been detected in the received signal. This alarm can be caused by bad quality of the E1/T1 signal or the device at the far-end is not sending valid E1/T1 signal due to misconfiguration. 1. If FIFA PIU is used, refer to the FIFA product documentation for instructions. 2. Check that the interface settings are correct for the link. 3. Check quality of the E1/T1 line by enabling a Loop to Interface (line) at the far end equipment. If the alarm is cancelled during the loop test, check the far-end equipment. 4. Equip an external cable loop to the interface to check that the interface in FIxx is ok. If the alarm is still active during the loop test, go to step 6. 5. Check the condition of cables, connectors and correct polarities of the wire pairs. 6. Check that FIxx is fully inserted in to ESMx. 7. Replace FIxx. 8. Check the signal quality of the transmission path to the alarming equipment.