TCTF – Target Channel Type Field
The UMTS air interface uses the Target Channel Type Field to provide identification of the logical channel class on the FACH (Forward Access Channel) and RACH (Random Access Channel) transport channels. TCTF indicates if BCCH (Broadcast Control Channel), CCCH (Common Control Channel), CTCH (Common Traffic Channel), SHCCH (Shared Channel Control Channel) or dedicated logical channel information is being transported.
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