broadcast control channel (GSM) (BCCH)
The Broadcast Control Channel (BCCH) is one of four radio channels of the Signaling Channel(Dm) in GSM mobile radio systems.
This organization channel( CCH) is used by the Base Transceiver Station( BTS) to broadcast general data unidirectionally over the GSM network; about the availability of special options, about the carrier frequency or about the frequencies of neighboring Base Transceiver Stations. In addition, the BCCH transmits synchronization information in Time Slot 0.