Do not get confused with channel and time slot. channel consists of two frequencies, one for TX one for RX. Each channel is divided into 8 TS.Two=16. Here one TS is dedicated to BCCH and one for SDCCH. 14TS= 14TCH=8.2Erlang. of traffic. they can handle.8.2/25M=320Subscribers if 25mEr/Subs OR 8.2/40mEr=200 subscribers if 40mEr/Subs is used.