Hi, I'm seeing multiple calls drop with incompatible_destination, i try to call again the same destination and it works fine. it gets me crazy... In logs i see the error, "has no write codec",  in the capture i see the negotiation both sides have codecs, they are correctly configure in directory. what could be causing this? i'm using version 1.8.6 Part of the LOG where the error happens: f39e569f-5184-481a-9f67-6185367e2829 2019-10-21 11:50:37.694352 [ALERT] switch_core_state_machine.c:701 sofia/1-perfil-fija/sip:11@131.179.185.131:5112 session thread sleep state: CS_CONSUME_MEDIA! f39e569f-5184-481a-9f67-6185367e2829 2019-10-21 11:50:41.794408 [ALERT] switch_core_session.c:1130 Send signal sofia/1-perfil-fija/sip:11@131.179.185.131:5112 [BREAK] f39e569f-5184-481a-9f67-6185367e2829 2019-10-21 11:50:41.794408 [ALERT] switch_core_session.c:1130 Send signal sofia/1-perfil-fija/sip:11@131.179.185.131:5112 [BREAK] f39e569f-5184-481a-9f67-6185367e2829 2019-10-21 11:50:41.794408 [ALERT] switch_core_state_machine.c:705 sofia/1-perfil-fija/sip:11@131.179.185.131:5112 session thread wake state: CS_CONSUME_MEDIA! f39e569f-5184-481a-9f67-6185367e2829 2019-10-21 11:50:41.814367 [ALERT] switch_core_media.c:486 Looking for zrtp-hash f39e569f-5184-481a-9f67-6185367e2829 2019-10-21 11:50:41.814367 [ALERT] switch_core_media.c:439 Deciding whether to pass zrtp-hash between legs f39e569f-5184-481a-9f67-6185367e2829 2019-10-21 11:50:41.814367 [ALERT] switch_core_media.c:441 CF_ZRTP_PASSTHRU_REQ not set, so not propagating zrtp-hash f39e569f-5184-481a-9f67-6185367e2829 2019-10-21 11:50:41.834519 [DEBUG] sofia.c:7325 Channel sofia/1-perfil-fija/sip:11@131.179.185.131:5112 entering state [completing][200] f39e569f-5184-481a-9f67-6185367e2829 2019-10-21 11:50:41.834519 [DEBUG] sofia.c:7335 Remote SDP: f39e569f-5184-481a-9f67-6185367e2829 v=0 f39e569f-5184-481a-9f67-6185367e2829 o=11 5008 38 IN IP4 192.168.100.11 f39e569f-5184-481a-9f67-6185367e2829 s=Mapping f39e569f-5184-481a-9f67-6185367e2829 c=IN IP4 192.168.100.11 f39e569f-5184-481a-9f67-6185367e2829 t=0 0 f39e569f-5184-481a-9f67-6185367e2829 m=audio 5008 RTP/AVP 0 101 f39e569f-5184-481a-9f67-6185367e2829 a=rtpmap:0 PCMU/8000 f39e569f-5184-481a-9f67-6185367e2829 a=rtpmap:101 telephone-event/8000 f39e569f-5184-481a-9f67-6185367e2829 a=fmtp:101 0-16 f39e569f-5184-481a-9f67-6185367e2829 a=ptime:20 f39e569f-5184-481a-9f67-6185367e2829 f39e569f-5184-481a-9f67-6185367e2829 2019-10-21 11:50:41.834519 [NOTICE] sofia.c:7338 Pre-Answer sofia/1-perfil-fija/sip:11@131.179.185.131:5112! f39e569f-5184-481a-9f67-6185367e2829 2019-10-21 11:50:41.934371 [ALERT] switch_core_session.c:2662 sofia/1-perfil-fija/sip:11@131.179.185.131:5112 Send KeyFrame f39e569f-5184-481a-9f67-6185367e2829 2019-10-21 11:50:41.934371 [DEBUG] switch_core_session.c:2825 EXECUTE [depth=1] sofia/1-perfil-fija/sip:11@131.179.185.131:5112 lua(execute_on_ring_b.lua) f39e569f-5184-481a-9f67-6185367e2829 2019-10-21 11:50:41.934371 [ALERT] switch_core_session.c:2889 sofia/1-perfil-fija/sip:11@131.179.185.131:5112 receive message [APPLICATION_EXEC] f39e569f-5184-481a-9f67-6185367e2829 2019-10-21 11:50:41.934371 [ALERT] switch_core_session.c:1047 Send signal sofia/1-perfil-fija/sip:11@131.179.185.131:5112 [BREAK] f39e569f-5184-481a-9f67-6185367e2829 2019-10-21 11:50:41.954358 [ALERT] switch_core_session.c:1047 Send signal sofia/1-perfil-fija/sip:11@131.179.185.131:5112 [BREAK] f39e569f-5184-481a-9f67-6185367e2829 2019-10-21 11:50:41.954358 [ALERT] switch_ivr_originate.c:4136 sofia/1-perfil-fija/sip:11@131.179.185.131:5112 receive message [AUDIO_SYNC] f39e569f-5184-481a-9f67-6185367e2829 2019-10-21 11:50:42.034370 [DEBUG] switch_cpp.cpp:1187 sofia/1-perfil-fija/sip:11@131.179.185.131:5112 destroy/unlink session from object f39e569f-5184-481a-9f67-6185367e2829 2019-10-21 11:50:42.034370 [ALERT] switch_core_session.c:2905 sofia/1-perfil-fija/sip:11@131.179.185.131:5112 receive message [APPLICATION_EXEC_COMPLETE] f39e569f-5184-481a-9f67-6185367e2829 2019-10-21 11:50:42.034370 [DEBUG] switch_channel.c:3537 (sofia/1-perfil-fija/sip:11@131.179.185.131:5112) Callstate Change RINGING -> EARLY f39e569f-5184-481a-9f67-6185367e2829 2019-10-21 11:50:42.094512 [ALERT] sofia.c:7338 sofia/1-perfil-fija/sip:11@131.179.185.131:5112 receive message [PROGRESS_EVENT] f39e569f-5184-481a-9f67-6185367e2829 2019-10-21 11:50:42.094512 [ALERT] switch_core_media.c:486 Looking for zrtp-hash f39e569f-5184-481a-9f67-6185367e2829 2019-10-21 11:50:42.094512 [ALERT] switch_core_media.c:439 Deciding whether to pass zrtp-hash between legs f39e569f-5184-481a-9f67-6185367e2829 2019-10-21 11:50:42.094512 [ALERT] switch_core_media.c:441 CF_ZRTP_PASSTHRU_REQ not set, so not propagating zrtp-hash f39e569f-5184-481a-9f67-6185367e2829 2019-10-21 11:50:42.094512 [ALERT] switch_ivr_bridge.c:1650 sofia/1-perfil-fija/sip:11@131.179.185.131:5112 receive message [AUDIO_SYNC] f39e569f-5184-481a-9f67-6185367e2829 2019-10-21 11:50:42.094512 [ALERT] switch_core_state_machine.c:701 sofia/1-perfil-fija/sip:11@131.179.185.131:5112 session thread sleep state: CS_CONSUME_MEDIA! f39e569f-5184-481a-9f67-6185367e2829 2019-10-21 11:50:42.094512 [ALERT] switch_ivr_bridge.c:1751 sofia/1-perfil-fija/sip:11@131.179.185.131:5112 receive message [BRIDGE] f39e569f-5184-481a-9f67-6185367e2829 2019-10-21 11:50:42.094512 [ALERT] switch_core_session.c:981 Send signal sofia/1-perfil-fija/sip:11@131.179.185.131:5112 [BREAK] f39e569f-5184-481a-9f67-6185367e2829 2019-10-21 11:50:42.094512 [DEBUG] switch_ivr_bridge.c:1795 (sofia/1-perfil-fija/sip:11@131.179.185.131:5112) State Change CS_CONSUME_MEDIA -> CS_EXCHANGE_MEDIA f39e569f-5184-481a-9f67-6185367e2829 2019-10-21 11:50:42.094512 [ALERT] switch_core_session.c:1480 Send signal sofia/1-perfil-fija/sip:11@131.179.185.131:5112 [BREAK] f39e569f-5184-481a-9f67-6185367e2829 2019-10-21 11:50:42.114382 [ALERT] switch_core_state_machine.c:705 sofia/1-perfil-fija/sip:11@131.179.185.131:5112 session thread wake state: CS_CONSUME_MEDIA! f39e569f-5184-481a-9f67-6185367e2829 2019-10-21 11:50:42.114382 [DEBUG] switch_core_state_machine.c:584 (sofia/1-perfil-fija/sip:11@131.179.185.131:5112) Running State Change CS_EXCHANGE_MEDIA (Cur 242 Tot 835614) f39e569f-5184-481a-9f67-6185367e2829 2019-10-21 11:50:42.114382 [DEBUG] switch_core_state_machine.c:653 (sofia/1-perfil-fija/sip:11@131.179.185.131:5112) State EXCHANGE_MEDIA f39e569f-5184-481a-9f67-6185367e2829 2019-10-21 11:50:42.114382 [ALERT] switch_core_state_machine.c:653 sofia/1-perfil-fija/sip:11@131.179.185.131:5112 Send KeyFrame f39e569f-5184-481a-9f67-6185367e2829 2019-10-21 11:50:42.114382 [DEBUG] mod_sofia.c:657 SOFIA EXCHANGE_MEDIA f39e569f-5184-481a-9f67-6185367e2829 2019-10-21 11:50:42.134357 [ERR] switch_core_media.c:15507 sofia/1-perfil-fija/sip:11@131.179.185.131:5112 has no write codec. f39e569f-5184-481a-9f67-6185367e2829 2019-10-21 11:50:42.134357 [NOTICE] switch_core_media.c:15508 Hangup sofia/1-perfil-fija/sip:11@131.179.185.131:5112 [CS_EXCHANGE_MEDIA] [INCOMPATIBLE_DESTINATION] f39e569f-5184-481a-9f67-6185367e2829 2019-10-21 11:50:42.134357 [ALERT] switch_channel.c:3346 Send signal sofia/1-perfil-fija/sip:11@131.179.185.131:5112 [KILL] f39e569f-5184-481a-9f67-6185367e2829 2019-10-21 11:50:42.134357 [DEBUG] mod_hash.c:297 Usage for total_account:11@clinicalluch.daratel.com is now 0 f39e569f-5184-481a-9f67-6185367e2829 2019-10-21 11:50:42.134357 [ALERT] switch_core_session.c:1480 Send signal sofia/1-perfil-fija/sip:11@131.179.185.131:5112 [BREAK] -- Saludos / Regards / Cumprimentos António Silva