@ fawad: MHA JUST AMPLYFY UR UPLINK AND DWNLINK SIGNAL to a long distance.
@andy: rest the BOIA is not the only solution coz its come again after an hr or days, there are few steps u must follow to get rid of this alarm
1) first check ur sectors swaping
2) check ur feeders connectors and if its solve ur prob then fine but if still not fix the prob then change duplexer. i troubleshoot many time this alarm and majority of time i fix the prob by swap or change duplexer. thank you