TCH/F
Traffic Channel Full Rate
The Full Rate channel in GSM is identified as a 22.8Kbps gross bit rate channel. This channel is bidirectional enabling the transfer of speech or circuit switched data. Signalling associated with this traffic channel will be carried on either the SACCH (Slow Associated Control Channel) or the FACCH (Fast Associated Control Channel). The latest releases of GSM include EDGE (Enhanced Data rates for Global Evolution) functionality which increases the gross rate.