I had a site this week with 7745 on TRX’s in all sectors. The BCF came with TRS alarms, 8081 and 8066 (frame alignment errors). Tried initially to correct the TRS alarms. 7745 on all sectors disappeared when the TRS alarms were corrected. After two days, we got 7745 on TRX5 only, but there was no TRS alarm present. Going for further BTS HW isolation for now.