BCH ,CBCH and CCCH works in GSM

Broadcast Channels (BCH)
CBCH and CCCH
  • CBCH (Cell Broadcast Channel)
  • transmits cell broadcast messages
  • PCH (Paging Channel)
  • carries PAG_REQ message
  • AGCH (Access Grant Channel)
  • SDCCH channel assignment
  • RACH (Random Access Channel)
  • communication request from MS to BTS