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  • #69131
    Time slot types in GSM

    What are the timeslot types used in GSM (eg; TCH, SDD, SDC, SDH, BCH, etc.). I m using Alcatel-Lucent solutions.


    Those are called logical channels:
    TCH is used for voice.
    SACCH, FACCH, BCCH, and PCH are used for signalling and controle.
    RACH is used for channel access.
    SCH is used for synchronization.

    A logical channel occupies a certain timeslot on a certain transmission frequency.

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