problems decoding after NAC Change

[boatbod]

10/02/25 08:38:44.725765 [0] tsbk(0x02) grp_v_ch_grant_up: ch1: 408.162500 ga1: 9890 ch2: 408.162500 ga2: 9890
10/02/25 08:38:44.725840 [0] check_expired_hold: hold_tgid(9890), hold_until(1759415926.078517)
10/02/25 08:38:44.725947 [0] voice update: tg(9890), rid(0), freq(408.162500), slot(-), prio(3)
10/02/25 08:38:44.725998 [0] releasing control channel
10/02/25 08:38:44.726037 [Hill AFB] Releasing control channel from receiver[0]
10/02/25 08:38:44.773361 [0] Hardware tune: dev_freq(408162500), dev_off(0), dev_frac(0), tune_freq(408162500)
10/02/25 08:38:44.773512 [0] Tuning to frequency 408.162500
10/02/25 08:38:44.773807 [0] frame_assembler_impl::control: cmd(sync_reset), args({"tuner": 0, "cmd": "sync_reset"})
10/02/25 08:38:44.773873 [0] rx_sync::sync_reset:
10/02/25 08:38:44.774079 [0] meta_update: queued[1] msg: {"json_type": "meta_update", "tgid": 9890, "tag": "", "rid": 0, "rtag": ""}
10/02/25 08:38:44.774173 [Hill AFB] needs control channel receiver
10/02/25 08:38:44.774209 [Hill AFB] receiver[0] not idle
10/02/25 08:38:44.774240 [Hill AFB] has no idle receivers for control channel monitoring
10/02/25 08:38:44.774373 [0] tsbk(0x33) iden_up_tdma: id: 3 freq: 762.006250 toff: 30.000000 spac: 12.500000 slots/carrier: 2
10/02/25 08:38:44.774483 [0] tsbk(0x34) iden_up_vu: id: 4 toff: 9.000000 spac: 12.500000 freq: 382.937500 [mob Tx+]
10/02/25 08:38:44.847702 [0] rx_sync::sync_established: protocol P25P1
10/02/25 08:38:44.853565 [0] NAC 0x3d0 TSBK: op=05 : 05 90 40 00 c0 00 00 00 08 00 10 8a
10/02/25 08:38:44.853699 [0] NAC 0x3d0 TSBK: op=0b : 0b 90 00 00 00 00 00 00 47 62 30 88
10/02/25 08:38:44.853720 [0] NAC 0x3d0 TSBK: op=34 : b4 00 65 86 40 64 01 9f 0a 00 e3 02
10/02/25 08:38:44.855780 [0] sync established, tuning time 0.129902 seconds
10/02/25 08:38:44.856036 [0] check_expired_hold: hold_tgid(None), hold_until(1759415924.7739413)
10/02/25 08:38:44.856292 [0] tsbk(0x05) unhandled: 0x05904000c000000008000000
10/02/25 08:38:44.856636 [0] tsbk(0x34) iden_up_vu: id: 6 toff: 5.000000 spac: 12.500000 freq: 136.000000 [mob Tx+]
10/02/25 08:38:44.874152 icemeta:rocess_q_events: queue size=1
10/02/25 08:38:44.875132 icemeta::run: received message arg1=10/02/25 08:38:33.473933
10/02/25 08:38:44.875530 icemeta::run: processing message
10/02/25 08:38:44.875815 metadata update: "http://10.0.0.52:8000/admin/metadata?mount=/op25&mode=updinfo&song=[9890]"
10/02/25 08:38:44.897116 metadata result: "401"
10/02/25 08:38:44.897373 meta_server::send_metadata(): metadata update error: 401
10/02/25 08:38:44.979101 [0] NAC 0x3d0 TSBK: op=30 : 30 00 00 04 00 33 42 74 eb c2 c3 e4
10/02/25 08:38:44.979429 [0] NAC 0x3d0 TSBK: op=09 : 09 90 11 80 00 00 00 00 00 00 e7 23
10/02/25 08:38:44.979446 [0] NAC 0x3d0 TSBK: op=3c : bc 00 00 33 d6 01 57 47 62 70 fc d1
10/02/25 08:38:44.986917 [0] tsbk(0x09) unhandled: 0x099011800000000000000000
10/02/25 08:38:44.987318 [0] tsbk(0x3c) adj_sts_bcst: rfid: 1 stid: 87 ch1: 4762(406.562500)
10/02/25 08:38:44.988178 [0] NAC 0x3d0 TSBK: op=39 : 39 00 01 50 47 a2 04 47 82 04 79 2a
10/02/25 08:38:44.988271 [0] NAC 0x3d0 TSBK: op=16 : 16 00 00 40 ff ff ff ff 00 01 5f cb
10/02/25 08:38:44.988286 [0] NAC 0x3d0 TSBK: op=02 : 82 00 47 e2 26 a2 47 e2 26 a2 92 8f
10/02/25 08:38:44.987440 [0] tsbk(0x3c) adj_sts_bcst: base freq: 382937500 step: 12500
10/02/25 08:38:44.988826 [0] tsbk(0x39) sccb: rfid: 1 stid: 80 ch1: 47a2(407.362500) ch2: 4782(406.962500)
10/02/25 08:38:44.989152 [0] tsbk(0x16) sndcp_data_ch: ch1: ffff ch2: ffff
10/02/25 08:38:44.989269 [Hill AFB] set tgid=9890, srcaddr=None, svcopts=None
10/02/25 08:38:44.989329 [Hill AFB] VF ts ph1: tgid: 9890, freq: 408.162500
10/02/25 08:38:44.989368 [0] tsbk(0x02) grp_v_ch_grant_up: ch1: 408.162500 ga1: 9890 ch2: 408.162500 ga2: 9890
10/02/25 08:38:44.989451 [0] check_expired_hold: hold_tgid(None), hold_until(1759415924.7739413)
10/02/25 08:38:44.989552 [Hill AFB] needs control channel receiver
10/02/25 08:38:44.989583 [Hill AFB] receiver[0] not idle
10/02/25 08:38:44.989612 [Hill AFB] has no idle receivers for control channel monitoring
10/02/25 08:38:45.110000 [0] NAC 0x3d0 TSBK: op=3d : 3d 00 03 22 d0 32 0a 25 10 a2 63 a0
10/02/25 08:38:45.110115 [0] NAC 0x3d0 TSBK: op=3d : 3d 00 13 25 e0 32 09 15 75 62 1b 36
10/02/25 08:38:45.110133 [0] NAC 0x3d0 TSBK: op=33 : b3 00 23 38 40 64 0a 25 10 a2 17 2e
10/02/25 08:38:45.111835 [0] tsbk(0x3d) iden_up id: 0 toff: -45.000000 spac: 6.250000 freq: 851.006250
10/02/25 08:38:45.111989 [0] p25_framer::load_nid() error check failed, frame discarded, nid=3d075e453a3b5c64
10/02/25 08:38:45.112035 [0] rx_sync::sync_reset:
10/02/25 08:38:45.112173 [0] tsbk(0x3d) iden_up id: 1 toff: 30.000000 spac: 6.250000 freq: 762.006250
10/02/25 08:38:45.112423 [0] tsbk(0x33) iden_up_tdma: id: 2 freq: 851.006250 toff: -45.000000 spac: 12.500000 slots/carrier: 2
10/02/25 08:38:45.113251 [0] rx_sync::sync_established: protocol P25P1
10/02/25 08:38:45.114923 [0] NAC 0x3d0 TDU15: LCW: ec=0, pb=0, sf=0, lco=0 : 00 00 44 00 26 a2 00 00 00, gly_errs=0
10/02/25 08:38:45.122798 [0] releasing: tg(9890), freq(408.162500), slot(-), reason(duid15)
10/02/25 08:38:45.122971 [0] channel control: cmd=call_end, params={'tuner': 0, 'cmd': 'call_end'}
10/02/25 08:38:45.123120 [0] frame_assembler_impl::control: cmd(call_end), args({"tuner": 0, "cmd": "call_end"})
10/02/25 08:38:45.123567 [0] meta_update: queued[1] msg: {"json_type": "meta_update", "tgid": 9890, "tag": "", "rid": null, "rtag": null}
10/02/25 08:38:45.123724 [0] idling receiver
10/02/25 08:38:45.123772 [0] channel control: cmd=set_slotid, params={'tuner': 0, 'cmd': 'set_slotid', 'slotid': 4}
10/02/25 08:38:45.123870 [0] frame_assembler_impl::control: cmd(set_slotid), args({"tuner": 0, "cmd": "set_slotid", "slotid": 4})
10/02/25 08:38:45.123895 [0] rx_sync::set_slot_mask: current(0), new(4)
10/02/25 08:38:45.123936 [0] check_expired_hold: hold_tgid(9890), hold_until(1759415927.122953)

Call seen and op25 tunes to the voice channel, then once there op25 receives an immediate TDU15 disconnect (end of call) prior to any audio.

 

[boatbod]

10/02/25 08:38:54.289815 [0] voice update: tg(9890), rid(2041416), freq(408.962500), slot(-), prio(3)
10/02/25 08:38:54.289862 [0] releasing control channel
10/02/25 08:38:54.289898 [Hill AFB] Releasing control channel from receiver[0]
10/02/25 08:38:54.337444 [0] Hardware tune: dev_freq(408962500), dev_off(0), dev_frac(0), tune_freq(408962500)
10/02/25 08:38:54.337592 [0] Tuning to frequency 408.962500
10/02/25 08:38:54.337736 [0] frame_assembler_impl::control: cmd(sync_reset), args({"tuner": 0, "cmd": "sync_reset"})
10/02/25 08:38:54.337772 [0] rx_sync::sync_reset:
10/02/25 08:38:54.337999 [0] meta_update: queued[1] msg: {"json_type": "meta_update", "tgid": 9890, "tag": "", "rid": 2041416, "rtag": ""}
10/02/25 08:38:54.338095 [Hill AFB] needs control channel receiver
10/02/25 08:38:54.338130 [Hill AFB] receiver[0] not idle
10/02/25 08:38:54.338160 [Hill AFB] has no idle receivers for control channel monitoring
10/02/25 08:38:54.338282 [0] tsbk(0x3b) net_sts_bcst: wacn: bee00 syid: 3d6 ch1: 4762(406.562500)
10/02/25 08:38:54.338387 [0] tsbk(0x05) unhandled: 0x85904000c000000008000000
10/02/25 08:38:54.415742 [0] rx_sync::sync_established: protocol P25P1
10/02/25 08:38:54.419032 [0] NAC 0x3d0 TSBK: op=00 : 00 00 44 48 22 26 a2 1f 26 48 3e ba
10/02/25 08:38:54.419108 [0] NAC 0x3d0 TSBK: op=09 : 09 90 14 00 00 00 00 00 00 00 04 64
10/02/25 08:38:54.419124 [0] NAC 0x3d0 TSBK: op=3c : bc 00 00 13 d6 01 54 47 5d 70 1c 50
10/02/25 08:38:54.419328 [0] sync established, tuning time 0.129548 seconds
10/02/25 08:38:54.419696 [Hill AFB] set tgid=9890, srcaddr=2041416, svcopts=0x44
10/02/25 08:38:54.419821 [Hill AFB] VF ts ph1: tgid: 9890, freq: 408.962500
10/02/25 08:38:54.419908 [0] tsbk(0x00) grp_v_ch_grant: opts: 0x44 freq: 408.962500 ga: 9890 sa: 2041416
10/02/25 08:38:54.420242 [0] check_expired_hold: hold_tgid(None), hold_until(1759415934.3378754)
10/02/25 08:38:54.420365 [Hill AFB] needs control channel receiver
10/02/25 08:38:54.420403 [Hill AFB] receiver[0] not idle
10/02/25 08:38:54.420434 [Hill AFB] has no idle receivers for control channel monitoring
10/02/25 08:38:54.420563 [0] tsbk(0x09) unhandled: 0x099014000000000000000000
10/02/25 08:38:54.420678 [0] tsbk(0x3c) adj_sts_bcst: rfid: 1 stid: 84 ch1: 475d(406.500000)
10/02/25 08:38:54.420722 [0] tsbk(0x3c) adj_sts_bcst: base freq: 382937500 step: 12500
10/02/25 08:38:54.437516 icemeta:rocess_q_events: queue size=1
10/02/25 08:38:54.437720 icemeta::run: received message arg1=10/02/25 08:38:33.473933
10/02/25 08:38:54.437785 icemeta::run: processing message
10/02/25 08:38:54.438093 metadata update: "http://10.0.0.52:8000/admin/metadata?mount=/op25&mode=updinfo&song=[9890]+"
10/02/25 08:38:54.443386 metadata result: "401"
10/02/25 08:38:54.443587 meta_server::send_metadata(): metadata update error: 401
10/02/25 08:38:54.547609 [0] NAC 0x3d0 TSBK: op=02 : 02 00 48 22 26 a2 48 22 26 a2 2b 75
10/02/25 08:38:54.547719 [0] NAC 0x3d0 TSBK: op=39 : 39 00 01 50 47 a2 04 47 82 04 79 2a
10/02/25 08:38:54.547736 [0] NAC 0x3d0 TSBK: op=16 : 96 00 00 40 ff ff ff ff 00 01 bb ff
10/02/25 08:38:54.550415 [0] NAC 0x3d0 TSBK: op=3d : 3d 00 13 25 e0 32 09 15 75 62 1b 36
10/02/25 08:38:54.550666 [0] NAC 0x3d0 TSBK: op=33 : 33 00 23 38 40 64 0a 25 10 a2 f3 1a
10/02/25 08:38:54.550681 [0] NAC 0x3d0 TSBK: op=33 : b3 00 33 a5 80 64 09 15 75 62 91 c8
10/02/25 08:38:54.552741 [Hill AFB] set tgid=9890, srcaddr=None, svcopts=None
10/02/25 08:38:54.552905 [Hill AFB] VF ts ph1: tgid: 9890, freq: 408.962500
10/02/25 08:38:54.552962 [0] tsbk(0x02) grp_v_ch_grant_up: ch1: 408.962500 ga1: 9890 ch2: 408.962500 ga2: 9890
10/02/25 08:38:54.553187 [0] check_expired_hold: hold_tgid(None), hold_until(1759415934.3378754)
10/02/25 08:38:54.553369 [Hill AFB] needs control channel receiver
10/02/25 08:38:54.553411 [Hill AFB] receiver[0] not idle
10/02/25 08:38:54.553504 [Hill AFB] has no idle receivers for control channel monitoring
10/02/25 08:38:54.553785 [0] tsbk(0x39) sccb: rfid: 1 stid: 80 ch1: 47a2(407.362500) ch2: 4782(406.962500)
10/02/25 08:38:54.553974 [0] tsbk(0x16) sndcp_data_ch: ch1: ffff ch2: ffff
10/02/25 08:38:54.554147 [0] tsbk(0x3d) iden_up id: 1 toff: 30.000000 spac: 6.250000 freq: 762.006250
10/02/25 08:38:54.554321 [0] tsbk(0x33) iden_up_tdma: id: 2 freq: 851.006250 toff: -45.000000 spac: 12.500000 slots/carrier: 2
10/02/25 08:38:54.554664 [0] tsbk(0x33) iden_up_tdma: id: 3 freq: 762.006250 toff: 30.000000 spac: 12.500000 slots/carrier: 2
10/02/25 08:38:54.679954 [0] p25_framer::load_nid() error check failed, frame discarded, nid=9c20008da58b4798
10/02/25 08:38:54.680070 [0] rx_sync::sync_reset:
10/02/25 08:38:54.810871 [0] rx_sync::sync_established: protocol P25P1
10/02/25 08:38:54.818056 [0] check_expired_hold: hold_tgid(None), hold_until(1759415934.3378754)
10/02/25 08:38:54.950656 [0] NAC 0x3d0 LDU2: ESS: algid=84, keyid=51, mi=63 dc 2e 70 30 cb 06 c6 00, rs_errs=0
10/02/25 08:38:54.950786 [0] IMBE 82 69 de f6 e0 aa e7 53 10 0a 70 errs 0
10/02/25 08:38:54.951366 [0] IMBE 71 b2 15 cf 2d f6 d1 54 87 87 82 errs 0
10/02/25 08:38:54.952156 [0] IMBE cd 88 7d d0 5c 04 b4 4a 44 ed 10 errs 0
10/02/25 08:38:54.953200 [0] IMBE 6b 14 5c e0 af a4 44 0c f7 3c 21 errs 0
10/02/25 08:38:54.954230 [0] IMBE a5 af 7b 03 c9 2e 5a df 97 17 2a errs 0
10/02/25 08:38:54.954863 [0] IMBE b3 52 6e 82 ef 16 9b 63 6f 92 3c errs 0
10/02/25 08:38:54.959731 [0] IMBE e9 68 2a ba b3 9e 15 bc 56 b1 05 errs 0
10/02/25 08:38:54.961323 [0] IMBE de 27 a4 8b 35 bd 82 e6 fa 57 f6 errs 0
10/02/25 08:38:54.963223 [0] IMBE 91 a5 ae 1e 98 1e 51 cd ad 5e 3e errs 0
10/02/25 08:38:54.972641 [0] process_qmsg: P25 info: b'{"encrypted": 1, "algid": 132, "keyid": 81}'
10/02/25 08:38:55.201993 [0] NAC 0x3d0 LDU1: LCW: ec=0, pb=0, sf=0, lco=0 : 00 00 44 00 26 a2 1f 26 48
10/02/25 08:38:55.202155 [0] op25_crypt_aes:repare: keyid[0x51] not found
10/02/25 08:38:55.202182 [0] IMBE fb 9e 5f 50 79 60 00 cf 82 e4 44 errs 0
10/02/25 08:38:55.202198 [0] IMBE c7 7a e0 a2 27 3e ed 8d 8f e6 dd errs 0
10/02/25 08:38:55.202212 [0] IMBE 50 1b 63 ba 3b 19 f3 5e 17 1b 3b errs 0
10/02/25 08:38:55.202226 [0] IMBE a4 d8 67 e1 6a ba 5e 36 88 9e 94 errs 0
10/02/25 08:38:55.202240 [0] IMBE ff e3 c2 ca dd 8f d5 06 21 c3 ac errs 0
10/02/25 08:38:55.202255 [0] IMBE ae 84 d2 60 0c 53 55 ed 22 b8 60 errs 0
10/02/25 08:38:55.202269 [0] IMBE 68 d5 1d 22 71 76 ec a8 77 55 5e errs 0
10/02/25 08:38:55.202283 [0] IMBE d7 28 12 d4 6c 46 3c 78 5f 7e 2e errs 0
10/02/25 08:38:55.202296 [0] IMBE 41 85 4c 59 1f 5f 94 e4 95 a7 06 errs 0
10/02/25 08:38:55.202842 [0] lcw(0x00) grp_v_ch_usr: opts: 0x44 ga: 9890 s: 0 sa: 2041416
10/02/25 08:38:55.203079 [0] check_expired_hold: hold_tgid(None), hold_until(1759415934.3378754)
10/02/25 08:38:55.203274 [Hill AFB] needs control channel receiver
10/02/25 08:38:55.203353 [Hill AFB] receiver[0] not idle
10/02/25 08:38:55.203398 [Hill AFB] has no idle receivers for control channel monitoring
10/02/25 08:38:55.336781 [0] NAC 0x3d0 LDU2: ESS: algid=84, keyid=51, mi=81 42 a2 d2 9f 09 76 1c 00, rs_errs=0
10/02/25 08:38:55.336916 [0] op25_crypt_aes:repare: keyid[0x51] not found
10/02/25 08:38:55.336950 [0] IMBE ae 88 86 3d a5 1e 0e 24 08 e2 2e errs 0
10/02/25 08:38:55.336968 [0] IMBE ae e3 0e 75 01 66 50 f2 e1 5e c5 errs 0
10/02/25 08:38:55.336983 [0] IMBE 2d 8a 91 58 51 36 ff ae 6c 59 d9 errs 0
10/02/25 08:38:55.336998 [0] IMBE 60 72 46 02 d6 f5 70 e1 2e c5 a4 errs 0
10/02/25 08:38:55.337012 [0] IMBE 98 99 8b 0f 7c 8d f1 a3 ec 47 d0 errs 0
10/02/25 08:38:55.337026 [0] IMBE 7b 50 b2 a4 8f f1 23 5e 61 ed 8e errs 0
10/02/25 08:38:55.337048 [0] IMBE 11 88 e8 1e 36 eb 98 d6 12 c5 bb errs 0
10/02/25 08:38:55.337064 [0] IMBE fa 18 66 e7 4a eb 78 8d 46 9a f0 errs 0
10/02/25 08:38:55.337077 [0] IMBE a7 85 e3 eb 0a ab 85 e0 e9 df c3 errs 0
10/02/25 08:38:55.345257 [0] check_expired_hold: hold_tgid(None), hold_until(1759415934.3378754)
10/02/25 08:38:55.345462 [0] process_qmsg: P25 info: b'{"encrypted": 1, "algid": 132, "keyid": 81}'
10/02/25 08:38:55.470635 [0] NAC 0x3d0 LDU1: LCW: ec=0, pb=0, sf=0, lco=0 : 00 00 44 00 26 a2 1f 26 48
10/02/25 08:38:55.470786 [0] op25_crypt_aes:repare: keyid[0x51] not found
10/02/25 08:38:55.470811 [0] IMBE 83 11 52 cd 85 e7 71 af e4 d1 db errs 0
10/02/25 08:38:55.470827 [0] IMBE ad 6a 5d 14 e3 35 9b aa e4 c0 90 errs 0
10/02/25 08:38:55.470841 [0] IMBE 26 a3 f2 7c ff 26 1b 4b d8 13 a4 errs 0
10/02/25 08:38:55.470856 [0] IMBE 3d e6 a0 88 58 44 ed f5 02 a5 4b errs 0
10/02/25 08:38:55.470870 [0] IMBE 29 77 1f 93 4c bf 40 9d 83 24 e4 errs 0
10/02/25 08:38:55.470884 [0] IMBE 1f 0d 04 45 a7 2e 4b 31 3e 56 9e errs 0
10/02/25 08:38:55.470898 [0] IMBE 44 d9 d0 b5 e0 e3 6b 26 92 a3 9c errs 0
10/02/25 08:38:55.470912 [0] IMBE e4 98 b0 db fd ab 3f 4c 48 4b 56 errs 0
10/02/25 08:38:55.470926 [0] IMBE 29 f0 4e d6 c1 c1 36 04 78 a1 4f errs 0
10/02/25 08:38:55.476835 [0] lcw(0x00) grp_v_ch_usr: opts: 0x44 ga: 9890 s: 0 sa: 2041416
10/02/25 08:38:55.477046 [0] check_expired_hold: hold_tgid(None), hold_until(1759415934.3378754)
10/02/25 08:38:55.477157 [Hill AFB] needs control channel receiver
10/02/25 08:38:55.477208 [Hill AFB] receiver[0] not idle
10/02/25 08:38:55.477245 [Hill AFB] has no idle receivers for control channel monitoring
10/02/25 08:38:55.728433 [0] NAC 0x3d0 LDU2: ESS: algid=84, keyid=51, mi=48 68 23 3c 01 00 4a c1 00, rs_errs=0
10/02/25 08:38:55.728565 [0] op25_crypt_aes:repare: keyid[0x51] not found
10/02/25 08:38:55.728592 [0] IMBE 79 d3 61 09 8a 63 4e 8e f4 7a 98 errs 0
10/02/25 08:38:55.728610 [0] IMBE b3 c2 df e7 43 67 71 1d 05 32 d7 errs 0
10/02/25 08:38:55.728625 [0] IMBE ef 9f 3a 59 46 63 36 31 8a 19 f8 errs 0
10/02/25 08:38:55.728639 [0] IMBE ef 1b 8e 3b 73 e6 3a 9c 34 1f 03 errs 0
10/02/25 08:38:55.728653 [0] IMBE 7f 89 30 b9 ce f9 40 9c 43 f8 ac errs 0
10/02/25 08:38:55.728667 [0] IMBE 61 d2 20 6a 69 63 a6 64 0f 62 59 errs 0
10/02/25 08:38:55.728681 [0] IMBE cd c8 ec 9b 96 9e 99 b6 3d 2f 23 errs 0
10/02/25 08:38:55.728695 [0] IMBE 47 88 c3 71 8e 05 4b 0b 4b cb aa errs 0
10/02/25 08:38:55.728709 [0] IMBE 2f 83 c6 22 65 51 96 82 c6 a3 68 errs 0
10/02/25 08:38:55.728765 [0] NAC 0x3d0 TDU15: LCW: ec=0, pb=0, sf=0, lco=15 : 0f 90 10 00 00 f0 1f 26 48, gly_errs=0
10/02/25 08:38:55.731604 [0] process_qmsg: P25 info: b'{"encrypted": 1, "algid": 132, "keyid": 81}'
10/02/25 08:38:55.732103 [0] releasing: tg(9890), freq(408.962500), slot(-), reason(duid15)

Call established then released (TDU15) after 5 frames of audio

 

[wgbecks]

attached is crypt_behavior 0 with -v 11 During this short example the audio was quiet except for a couple of chirps. There were 5 or 6 encrypted trunk groups/transmissions. however i cant tell you which ones had chirpedA

There were no transmissions found in your log that were in the clear. All logged audio frames (LDU2's) were marked as having AES256 encryption. You can expect to hear garbled audio or chirps with crypt behavior set to "0" when you don't have any matching keys for a given algorithm in use. Further, op25 usually doesn't capture most HDU/MAC-PTT that can result in audio bursts until the next algid is decoded even
when crypt behavior Option 2 set.

If you think this system has any groups transmitted in the clear, then either whitelist those groups, or blacklist those that known to be ncrypted
and be done with it.

 

[k7dq]

i think there are not any clear groups only sporadic users who for what ever reason aren’t encrypting their transmissions. However on the other side of the conversation it is encrypted, so I only hear half the conversation when a clear transmission is heard.

hopefully a final question:
are the TDU15 messages part of OP25 standard or are they part of the boatbod processing of OP25 messages.
is there any documentation here or external that would be helpful in understanding what is in the v 11 logs?
thanks

 

[wgbecks]

hopefully a final question:
are the TDU15 messages part of OP25 standard or are they part of the boatbod processing of OP25 messages.

The short explanation

The "Terminator Data Unit" (TDU) is part of the P25 protocol standards. It's a sequence of frames transmitted at the end of a transmission (call) during an idle hang time period that not only signals the end of transmission, but it also serves to keep receiving radios synchronized at the ready to receive the next call, should one occur prior to the expiration idle time period.

TDU's can be simple terminators or may contain link control information. If interested, you can learn more here: P25 Training Guide.

 

[boatbod]

hopefully a final question:
are the TDU15 messages part of OP25 standard or are they part of the boatbod processing of OP25 messages.
is there any documentation here or external that would be helpful in understanding what is in the v 11 logs?
thanks

TDU3 & TDU15 are P25 Phase 1 (FDMA) messages that op25 receives from the RFSS (i.e. received over the air). Both messages mean the voice transmission is ending, but the TDU15 also means the network is about to hang up and stop transmitting, vs the TDU3 which is common during brief breaks between transmissions.