Hi, i'm regged to a gateway, if I initiate a call to my mobile after 5 Minutes the call terminates but only on my mobile, my phone (connected to freeswitch) counts the time until I hang up to the time when the problem occurs I get following log entries: nta.c:7159 _nta_incoming_timer() nta: timer J fired, terminate 401 response nta.c:7188 _nta_incoming_timer() nta_incoming_timer: 0/0 resent, 0/0 tout, 1/2 term, 1/2 free nta.c:7159 _nta_incoming_timer() nta: timer J fired, terminate 200 response nta.c:7188 _nta_incoming_timer() nta_incoming_timer: 0/0 resent, 0/0 tout, 1/1 term, 1/1 free nta.c:9101 outgoing_timer_dk() nta: timer K fired, terminate OPTIONS (115912462) nta.c:8929 _nta_outgoing_timer() nta_outgoing_timer: 0/0 resent, 0/0 tout, 1/3 term, 1/3 free nta.c:9101 outgoing_timer_dk() nta: timer K fired, terminate OPTIONS (115912463) nta.c:8929 _nta_outgoing_timer() nta_outgoing_timer: 0/0 resent, 0/0 tout, 1/2 term, 1/2 free nta.c:9101 outgoing_timer_dk() nta: timer K fired, terminate OPTIONS (115912464) nta.c:8929 _nta_outgoing_timer() nta_outgoing_timer: 0/0 resent, 0/0 tout, 1/1 term, 1/1 free auth_digest.c:226 auth_digest_a1() auth_digest_a1() has A1 = MD5(+49xxx: mga.mnet-voip.de:xxx) = xxxx auth_digest.c:318 auth_digest_response() A2 = MD5(REGISTER:sip:mga.mnet-voip.de;transport=udp) auth_digest.c:348 auth_digest_response() auth_response: xxx = MD5(xxx) (qop=auth) nta.c:10720 outgoing_query_aaaa() nta: for "mga.mnet-voip.de" query "mga.mnet-voip.de" AAAA (cached) nta.c:10774 outgoing_answer_aaaa() nta(0x7fe3740563f0): mga.mnet-voip.de. IN AAAA 2001:a60:1:7::10 nta.c:8304 outgoing_send() nta: sent REGISTER (115912137) to udp/2001:a60:1:7::10:5060/sip nta.c:3299 agent_recv_response() nta: received 200 OK for REGISTER (115912137) nta.c:3366 agent_recv_response() nta: 200 OK is going to a transaction nua_stack.c:271 nua_stack_event() nua(0x7fe394014e10): event r_register 200 OK 2017-12-05 19:38:12.246833 [DEBUG] switch_rtp.c:1463 [ zrtp cache]: Storing ZRTP cache to </var/lib/freeswitch/db/zrtp.dat>... 2017-12-05 19:38:12.246833 [DEBUG] switch_rtp.c:1324 Saving ZRTP cache: OK nta.c:9101 outgoing_timer_dk() nta: timer K fired, terminate REGISTER (115912137) nta.c:8929 _nta_outgoing_timer() nta_outgoing_timer: 0/0 resent, 0/0 tout, 1/1 term, 1/1 free nua_stack.c:569 nua_stack_signal() nua(0x7fe394083af0): recv signal r_options nta.c:10720 outgoing_query_aaaa() nta: for "mga.mnet-voip.de" query "mga.mnet-voip.de" AAAA (cached) nta.c:10774 outgoing_answer_aaaa() nta(0x7fe3740398f0): mga.mnet-voip.de. IN AAAA 2001:a60:1:7::10 nta.c:8304 outgoing_send() nta: sent OPTIONS (115912465) to udp/2001:a60:1:7::10:5060 nta.c:3299 agent_recv_response() nta: received 403 Forbidden for OPTIONS (115912465) nta.c:3366 agent_recv_response() nta: 403 Forbidden is going to a transaction nua_stack.c:271 nua_stack_event() nua(0x7fe394083af0): event r_options 403 Forbidden nua_stack.c:569 nua_stack_signal() nua(0x7fe394083af0): recv signal r_destroy nua_stack.c:569 nua_stack_signal() nua(0x7fe394083b80): recv signal r_options nta.c:10720 outgoing_query_aaaa() nta: for "mga.mnet-voip.de" query "mga.mnet-voip.de" AAAA (cached) nta.c:10774 outgoing_answer_aaaa() nta(0x7fe37402c980): mga.mnet-voip.de. IN AAAA 2001:a60:1:7::10 nta.c:8304 outgoing_send() nta: sent OPTIONS (115912466) to udp/2001:a60:1:7::10:5060 nta.c:3299 agent_recv_response() nta: received 403 Forbidden for OPTIONS (115912466) nta.c:3366 agent_recv_response() nta: 403 Forbidden is going to a transaction nua_stack.c:271 nua_stack_event() nua(0x7fe394083b80): event r_options 403 Forbidden nua_stack.c:569 nua_stack_signal() nua(0x7fe394083b80): recv signal r_destroy nua_stack.c:569 nua_stack_signal() nua(0x7fe39407d2d0): recv signal r_options nta.c:10720 outgoing_query_aaaa() nta: for "mga.mnet-voip.de" query "mga.mnet-voip.de" AAAA (cached) nta.c:10774 outgoing_answer_aaaa() nta(0x7fe37405b8f0): mga.mnet-voip.de. IN AAAA 2001:a60:1:7::10 nta.c:8304 outgoing_send() nta: sent OPTIONS (115912467) to udp/2001:a60:1:7::10:5060 nta.c:3299 agent_recv_response() nta: received 403 Forbidden for OPTIONS (115912467) nta.c:3366 agent_recv_response() nta: 403 Forbidden is going to a transaction nua_stack.c:271 nua_stack_event() nua(0x7fe39407d2d0): event r_options 403 Forbidden nua_stack.c:569 nua_stack_signal() nua(0x7fe39407d2d0): recv signal r_destroy nta.c:9101 outgoing_timer_dk() nta: timer K fired, terminate OPTIONS (115912465) nta.c:8929 _nta_outgoing_timer() nta_outgoing_timer: 0/0 resent, 0/0 tout, 1/3 term, 1/3 free nta.c:9101 outgoing_timer_dk() nta: timer K fired, terminate OPTIONS (115912466) nta.c:8929 _nta_outgoing_timer() nta_outgoing_timer: 0/0 resent, 0/0 tout, 1/2 term, 1/2 free nta.c:9101 outgoing_timer_dk() nta: timer K fired, terminate OPTIONS (115912467) nta.c:8929 _nta_outgoing_timer() nta_outgoing_timer: 0/0 resent, 0/0 tout, 1/1 term, 1/1 free it seems like the registration is the problem but I have no glue why. My Provider won't help cause he tries to bend me to a router he provides. Incoming calls are no problem at all. Any ideas? Anything else I can provide? Thanks in advance Regards Philipp