Sniffing to RACH

Hello list I am trying to sniff TS0 of BTS for purpose of sniffing RACH. but i am bit confused in this. i attached my code in mail. short description: 1. changed IMM_ASS to single RF and allow to jump as per IMM_ASS only once and no Hoppoing 2. while jumping to single RF imm ass used chan_nr=40 (40 & 7 =0) 3. added own function for decoding ccch. current problem able to decode PCH and AGCH properly but its slow in action. but if i use following modification in mframe_sched.c static const struct mframe_sched_item mf_ccch[] = { { .sched_set = SNIFF_QUAD_DL, .modulo = 51, .frame_nr = 6 }, { .sched_set = SNIFF_QUAD_UL, .modulo = 51, .frame_nr = 6 +15 }, { .sched_set = SNIFF_QUAD_DL, .modulo = 51, .frame_nr = 12}, { .sched_set = SNIFF_QUAD_UL, .modulo = 51, .frame_nr = 12 +15}, { .sched_set = SNIFF_QUAD_DL, .modulo = 51, .frame_nr = 16 }, { .sched_set = SNIFF_QUAD_UL, .modulo = 51, .frame_nr = 16 +15}, { .sched_set = SNIFF_QUAD_DL, .modulo = 51, .frame_nr = 22 }, { .sched_set = SNIFF_QUAD_UL, .modulo = 51, .frame_nr = 22 +15}, { .sched_set = SNIFF_QUAD_DL, .modulo = 51, .frame_nr = 26 }, { .sched_set = SNIFF_QUAD_UL, .modulo = 51, .frame_nr = 26+15 }, { .sched_set = SNIFF_QUAD_DL, .modulo = 51, .frame_nr = 32 }, { .sched_set = SNIFF_QUAD_UL, .modulo = 51, .frame_nr = 32 +15}, { .sched_set = SNIFF_QUAD_DL, .modulo = 51, .frame_nr = 36 }, { .sched_set = SNIFF_QUAD_UL, .modulo = 51, .frame_nr = 36 +15}, { .sched_set = SNIFF_QUAD_DL, .modulo = 51, .frame_nr = 42 }, { .sched_set = SNIFF_QUAD_UL, .modulo = 51, .frame_nr = 42 +15}, { .sched_set = SNIFF_QUAD_DL, .modulo = 51, .frame_nr = 46 }, { .sched_set = SNIFF_QUAD_UL, .modulo = 51, .frame_nr = 46 +15}, { .sched_set = NULL } }; it becomes very faster but I am not sure whether its correct or will give me correct out put. -- Akib Sayyed Matrix-Shell akibsayyed(a)gmail.com akibsayyed(a)matrixshell.com Mob:- +91-966-514-2243