Glossary definition of CCCH

Also known as: Common Control Channel

Common Control Channels (CCCH) are uplink and downlink channels within GSM systems, and are used to communicate between MS (Mobile Stations) and BTS (Base Transceiver Stations).

The CCCH are used in setting up calls from either the MS or network side, and are necessary to establish the dedicated link with the network. Three different types of CCCH are defined: Paging Channel (PCH), Random Access Channel (RACH), Access Grant Channel (AGCH).