Обновил iOS до 10.3, ничего не изменилось. В логах вот так (IP скрыл):
17/03/30 11:58:47.400|200003| Trc|50|0010|: DBG: PUSH request is sent succesfully. No errors received. CallGuild=STZFFOAXAYDC
17/03/30 11:58:58.071|200002| Trc|75|0008|: Upd: Call(45) [Connected] DN=111 IP=111 EP=PlayFile
Attached: [prevCall=0;prevLeg=0;devcontact=sip:111@94.*.*.*:32884;lookup_displayname=???????;extnumber=PlayFile;chid=0000015B1F151045_45]
17/03/30 11:58:58.219|200003| Trc|50|0009|: DBG: incall_OnTerminated called: STZFFOAXAYDC
17/03/30 11:58:58.219|200003| Trc|50|0010|: DBG: OnTerminated called:STZFFOAXAYDC
17/03/30 11:58:58.370|200002| Trc|75|0008|: Del: Call(45) [Ringing] DN=111 IP=111 EP=PlayFile
Attached: [chid=0000015B1F151045_45;prevCall=0;prevLeg=0;extnumber=PlayFile;devcontact=sip:
[email protected]:5488;rinstance=1b806f58681b5dbf;lookup_displayname=???????]
17/03/30 11:58:58.592|100018| Inf|50|0010|: Call(STZFFOAXAYDC): sent push request to APNs:
{"replaces":"nG3-lwDzq-6opImRu4a7LQ..;from-tag=0f884539;to-tag=05f9b43c","callerid":"PlayFile","callername":"PlayFile","inst":"C66147","reason":1 }
17/03/30 11:58:58.593|200003| Trc|50|0010|: DBG: PUSH request is sent succesfully. No errors received. CallGuild=STZFFOAXAYDC
17/03/30 11:59:01.407|200002| Trc|75|0008|: Del: Call(45) [Connected] DN=111 IP=(null) EP=PlayFile
Attached: [prevCall=0;prevLeg=0;devcontact=sip:111@94.*.*.*:32884;lookup_displayname=???????;extnumber=PlayFile;chid=0000015B1F151045_45]
Куда копать дальше?