I have a similary problem.
BCF-045 EQUIPM 2006-10-31 23:49:17.38
(12739) 7601 BCF OPERATION DEGRADED
Difference between PCM and base station frequency reference.
Sometimes, i have EFS not at 100%
I think that you must check your PCM like me.
Your PCM is bad quality but not enough to broke the link.
7601 BCF OPERATION DEGRADED
A major fault (or faults) has occurred in the base station.
Check the fault reason from the supplementary text field of the alarm.
Supplementary information fields
1-6 XX XX XX XX XX XX
1 2 3 4 5 6
1) rack (cabinet) number
4) type of unit
2) shelf number
5) unit number
6) subunit number
Fault reason: Difference between PCM and base station frequency reference.
1. Check the cabling.
2. If the cabling is OK, replace the BOI.