I do some very simple LAPDm test. Establishing link. ms_to_bts_l1_cb: MS(us) -> BTS prim message bts_to_ms_tx_cb: MS->BTS(us) message 25 BTS: Verifying CM request. Confirming ms_to_bts_tx_cb: BTS->MS(us) message 9 MS: Verifying incoming primitive. Sending back to MS ms_to_bts_tx_cb: BTS->MS(us) message 12 MS: Verifying incoming MM message: 3 ms_to_bts_l1_cb: MS(us) -> BTS prim message Sending back to BTS ms_to_bts_l1_cb: MS(us) -> BTS prim message bts_to_ms_tx_cb: MS->BTS(us) message 14 BTS: Verifying dummy message. I test RF channel release of an unestablished channel. I test contention resultion by having two mobiles collide and first mobile repeating SABM. bts_to_ms_tx_cb: MS->BTS(us) message 25 BTS: Verifying CM request. Success.