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 lapdm_phsap_dequeue_prim(): got rc 0: Success Took message from DCCH queue: L2 header size 3, L3 size 20, SAP 0x1000000, 0/0, Link 0x00 Message: [L2]> 01 73 41 [L3]> 05 24 31 03 50 18 93 08 29 47 80 00 00 00 00 80 2b 2b 2b 2b ms_to_bts_tx_cb: BTS->MS(us) message 6 MS: Verifying incoming primitive. Sending back to MS lapdm_phsap_dequeue_prim(): got rc 0: Success Took message from DCCH queue: L2 header size 3, L3 size 20, SAP 0x1000000, 0/0, Link 0x00 Message: [L2]> 03 00 0d [L3]> 05 04 0d 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 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 lapdm_phsap_dequeue_prim(): got rc -19: No such device 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. lapdm_phsap_dequeue_prim(): got rc 0: Success MSGB: L3 is undefined Took message from DCCH queue: L2 header size 23, L3 size 0, SAP 0x1000000, 0/0, Link 0x00 Message: [L2]> 01 21 01 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b lapdm_phsap_dequeue_prim(): got rc -19: No such device lapdm_phsap_dequeue_prim(): got rc -19: No such device 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. lapdm_phsap_dequeue_prim(): got rc 0: Success Took message from DCCH queue: L2 header size 3, L3 size 20, SAP 0x1000000, 0/0, Link 0x00 Message: [L2]> 01 73 41 [L3]> 05 24 31 03 50 18 93 08 29 47 80 00 00 00 00 80 2b 2b 2b 2b lapdm_phsap_dequeue_prim(): got rc -19: No such device lapdm_phsap_dequeue_prim(): got rc 0: Success Took message from DCCH queue: L2 header size 3, L3 size 20, SAP 0x1000000, 0/0, Link 0x00 Message: [L2]> 01 73 41 [L3]> 05 24 31 03 50 18 93 08 29 47 80 00 00 00 00 80 2b 2b 2b 2b I test RF channel establishment. Testing SAPI3/SDCCH lapdm_rslms_recvmsg(): got rc 0: Success lapdm_phsap_dequeue_prim(): got rc 0: Success Took message from DCCH queue: L2 header size 3, L3 size 20, SAP 0x1000000, 0/0, Link 0x03 Message: [L2]> 0f 3f 01 [L3]> 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b lapdm_phsap_dequeue_prim(): got rc -19: No such device lapdm_phsap_dequeue_prim(): got rc -19: No such device Testing SAPI3/SACCH lapdm_rslms_recvmsg(): got rc 0: Success lapdm_phsap_dequeue_prim(): got rc -19: No such device lapdm_phsap_dequeue_prim(): got rc 0: Success Took message from ACCH queue: L2 header size 5, L3 size 18, SAP 0x1000000, 0/0, Link 0x43 Message: [L2]> 00 00 0f 3f 01 [L3]> 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b lapdm_phsap_dequeue_prim(): got rc -19: No such device lapdm_phsap_dequeue_prim(): got rc -19: No such device I test if desync problems exist in LAPDm Establishing SAPI=0 bts_to_ms_dummy_tx_cb: MS->BTS(us) message 25 Dumping queue: 00 00 17 [L2]> 01 73 41 [L3]> 05 24 31 03 50 18 93 08 29 47 80 00 00 00 00 80 lapdm_phsap_dequeue_prim(): got rc 0: Success Took message from DCCH queue: L2 header size 3, L3 size 20, SAP 0x1000000, 0/0, Link 0x00 Message: [L2]> 01 73 41 [L3]> 05 24 31 03 50 18 93 08 29 47 80 00 00 00 00 80 2b 2b 2b 2b Sending Classmark Change bts_to_ms_dummy_tx_cb: MS->BTS(us) message 27 Dumping queue: 00 00 17 [L2]> 01 21 01 lapdm_phsap_dequeue_prim(): got rc 0: Success MSGB: L3 is undefined Took message from DCCH queue: L2 header size 23, L3 size 0, SAP 0x1000000, 0/0, Link 0x00 Message: [L2]> 01 21 01 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b Enqueueing Ciphering Mode Command Dumping queue: 00 00 17 [L2]> 03 20 0d [L3]> 06 35 01 Sending GPRS Suspend Request bts_to_ms_dummy_tx_cb: MS->BTS(us) message 22 Dumping queue: 00 00 17 [L2]> 03 40 0d [L3]> 06 35 01 lapdm_phsap_dequeue_prim(): got rc 0: Success Took message from DCCH queue: L2 header size 3, L3 size 20, SAP 0x1000000, 0/0, Link 0x00 Message: [L2]> 03 40 0d [L3]> 06 35 01 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b Sending Cipher Mode Complete bts_to_ms_dummy_tx_cb: MS->BTS(us) message 11 Dumping queue: 00 00 17 [L2]> 01 61 01 lapdm_phsap_dequeue_prim(): got rc 0: Success MSGB: L3 is undefined Took message from DCCH queue: L2 header size 23, L3 size 0, SAP 0x1000000, 0/0, Link 0x00 Message: [L2]> 01 61 01 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b Establishing SAPI=3 bts_to_ms_dummy_tx_cb: MS->BTS(us) message 6 Dumping queue: lapdm_phsap_dequeue_prim(): got rc 0: Success Took message from DCCH queue: L2 header size 3, L3 size 20, SAP 0x1000000, 0/0, Link 0x03 Message: [L2]> 0d 73 01 [L3]> 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b Sending CP-DATA Dumping queue: lapdm_phsap_dequeue_prim(): got rc 0: Success MSGB: L3 is undefined Took message from DCCH queue: L2 header size 23, L3 size 0, SAP 0x1000000, 0/0, Link 0x03 Message: [L2]> 0d 21 01 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b === I test SAPI0/SAPI3 prioritization === MS is establishing a SAPI=0 link bts_to_ms_dummy_tx_cb: MS->BTS(us) message 22 BTS is establishing a SAPI=3 link lapdm_phsap_dequeue_prim(): got rc 0: Success Took message from DCCH queue: L2 header size 3, L3 size 20, SAP 0x1000000, 0/0, Link 0x00 Message: [L2]> 01 73 35 [L3]> 06 27 07 03 50 58 92 05 f4 44 59 ba 63 2b 2b 2b 2b 2b 2b 2b lapdm_phsap_dequeue_prim(): got rc 0: Success Took message from DCCH queue: L2 header size 3, L3 size 20, SAP 0x1000000, 0/0, Link 0x03 Message: [L2]> 0f 3f 01 [L3]> 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b Checking the func=UA message: OK Checking the func=SABM message: OK Checking whether the DCCH/SACCH queues are empty lapdm_phsap_dequeue_prim(): got rc -19: No such device lapdm_phsap_dequeue_prim(): got rc -19: No such device Success.