Hi Raja,
The BCCH is the broadcasting channel and it is a downlink logical channel. It broadcasts the sytstem information to all subscribers under it’s coverage. This includes the MNC,MCC,CI,Frequency, BSIC,C1,C2, LAI, RXlev,neighbouring list… and etc. Ussually the BCCH is used on the first TRX on timeslot 0.
Abdel