Reply To: How to calclate Extra TS on BTS 8th February 2011 at 10:55 #65674 MRGGuest For 2TRUs:8X2=16 Time Slots BCCH : 1 TS SDCCH : 1 TS TCH: 14 TS Refer to Erlang B table for 14 TS with 0.2GoS=8.2Erlangs Traffic 8.2 Erl at 2% GoS