Thanks for your answer. Well i have some codecs in common: a377bf2e-d94c-4de2-abf0-03b84f7a540b 2016-09-19 07:41:55.450128 [DEBUG] switch_core_media.c:4331 Audio Codec Compare [G722:9:8000:20:64000:1] ++++ is saved as a match a377bf2e-d94c-4de2-abf0-03b84f7a540b 2016-09-19 07:41:55.450128 [DEBUG] switch_core_media.c:4331 Audio Codec Compare [PCMA:8:8000:20:64000:1] ++++ is saved as a match a377bf2e-d94c-4de2-abf0-03b84f7a540b 2016-09-19 07:41:55.450128 [DEBUG] switch_core_media.c:4276 Audio Codec Compare [PCMU:0:8000:20:64000:1]/[opus:116:48000:20:0:1] a377bf2e-d94c-4de2-abf0-03b84f7a540b 2016-09-19 07:41:55.450128 [DEBUG] switch_core_media.c:4331 Audio Codec Compare [PCMU:0:8000:20:64000:1] ++++ is saved as a match … a377bf2e-d94c-4de2-abf0-03b84f7a540b 2016-09-19 07:41:55.450128 [DEBUG] switch_core_media.c:4784 Video Codec Compare [H264:105] +++ is saved as a match a377bf2e-d94c-4de2-abf0-03b84f7a540b 2016-09-19 07:41:55.450128 [DEBUG] switch_core_media.c:4760 Video Codec Compare [MP4V-ES:96]/[H261:31] a377bf2e-d94c-4de2-abf0-03b84f7a540b 2016-09-19 07:41:55.450128 [DEBUG] switch_core_media.c:4760 Video Codec Compare [MP4V-ES:96]/[VP8:99] a377bf2e-d94c-4de2-abf0-03b84f7a540b 2016-09-19 07:41:55.450128 [DEBUG] switch_core_media.c:4760 Video Codec Compare [MP4V-ES:96]/[H263:34] a377bf2e-d94c-4de2-abf0-03b84f7a540b 2016-09-19 07:41:55.450128 [DEBUG] switch_core_media.c:4760 Video Codec Compare [MP4V-ES:96]/[H264:99] a377bf2e-d94c-4de2-abf0-03b84f7a540b 2016-09-19 07:41:55.450128 [DEBUG] switch_core_media.c:4760 Video Codec Compare [H263:34]/[H261:31] a377bf2e-d94c-4de2-abf0-03b84f7a540b 2016-09-19 07:41:55.450128 [DEBUG] switch_core_media.c:4760 Video Codec Compare [H263:34]/[VP8:99] a377bf2e-d94c-4de2-abf0-03b84f7a540b 2016-09-19 07:41:55.450128 [DEBUG] switch_core_media.c:4760 Video Codec Compare [H263:34]/[H263:34] a377bf2e-d94c-4de2-abf0-03b84f7a540b 2016-09-19 07:41:55.450128 [DEBUG] switch_core_media.c:4784 Video Codec Compare [H263:34] +++ is saved as a match a377bf2e-d94c-4de2-abf0-03b84f7a540b 2016-09-19 07:41:55.450128 [DEBUG] switch_core_media.c:4760 Video Codec Compare [H263:34]/[H264:99] a377bf2e-d94c-4de2-abf0-03b84f7a540b 2016-09-19 07:41:55.450128 [DEBUG] switch_core_media.c:4760 Video Codec Compare [H261:31]/[H261:31] a377bf2e-d94c-4de2-abf0-03b84f7a540b 2016-09-19 07:41:55.450128 [DEBUG] switch_core_media.c:4784 Video Codec Compare [H261:31] +++ is saved as a match a377bf2e-d94c-4de2-abf0-03b84f7a540b 2016-09-19 07:41:55.450128 [DEBUG] switch_core_media.c:4760 Video Codec Compare [H261:31]/[VP8:99] a377bf2e-d94c-4de2-abf0-03b84f7a540b 2016-09-19 07:41:55.450128 [DEBUG] switch_core_media.c:4760 Video Codec Compare [H261:31]/[H263:34] a377bf2e-d94c-4de2-abf0-03b84f7a540b 2016-09-19 07:41:55.450128 [DEBUG] switch_core_media.c:4760 Video Codec Compare [H261:31]/[H264:99] After this, the log says: a377bf2e-d94c-4de2-abf0-03b84f7a540b 2016-09-19 07:41:55.470147 [NOTICE] mod_dptools.c:1309 Channel [sofia/internal/nobody@192.168.88.21] has been answered a377bf2e-d94c-4de2-abf0-03b84f7a540b 2016-09-19 07:41:55.470147 [DEBUG] switch_channel.c:3770 (sofia/internal/nobody@192.168.88.21) Callstate Change EARLY -> ACTIVE a377bf2e-d94c-4de2-abf0-03b84f7a540b 2016-09-19 07:41:55.470147 [DEBUG] sofia.c:6962 Channel sofia/internal/nobody@192.168.88.21 entering state [completed][200] … a377bf2e-d94c-4de2-abf0-03b84f7a540b 2016-09-19 07:41:55.490154 [DEBUG] conference_loop.c:1102 Setup timer soft success interval: 20 samples: 160 a377bf2e-d94c-4de2-abf0-03b84f7a540b 2016-09-19 07:41:55.510307 [NOTICE] switch_core_io.c:1202 Activating write resampler 2016-09-19 07:41:55.560315 [NOTICE] avcodec.c:1014 codec: id=28 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 2016-09-19 07:41:55.560315 [DEBUG] conference_video.c:2446 Setting up video write codec H264 at slot 0 2016-09-19 07:41:55.560315 [INFO] avcodec.c:1072 initializing encoder 1408x1152 2016-09-19 07:41:55.560315 [DEBUG] avcodec.c:834 NVENC HW CODEC NOT PRESENT using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX XOP FMA4 FMA3 LZCNT BMI1 profile Constrained Baseline, level 4.1 2016-09-19 07:41:55.630294 [DEBUG] conference_video.c:1111 Canvas position 1 applied layout 1x1 2016-09-19 07:41:55.680312 [DEBUG] conference_video.c:1111 Canvas position 1 applied layout 1x1 a377bf2e-d94c-4de2-abf0-03b84f7a540b 2016-09-19 07:41:55.710321 [DEBUG] conference_member.c:1654 Raw Codec Activation Success L16@16000hz 1 channel 20ms a377bf2e-d94c-4de2-abf0-03b84f7a540b 2016-09-19 07:41:55.710321 [DEBUG] conference_member.c:1701 Raw Codec Activation Success L16@48000hz 2 channel 20ms a377bf2e-d94c-4de2-abf0-03b84f7a540b 2016-09-19 07:41:55.710321 [DEBUG] conference_loop.c:1102 Setup timer soft success interval: 20 samples: 160 2016-09-19 07:41:58.250405 [DEBUG] mod_local_stream.c:848 Opening Stream [moh/48000] 48000hz 2016-09-19 07:41:58.250405 [WARNING] switch_core_file.c:348 File has 1 channels, muxing to 2 channels will occur. a377bf2e-d94c-4de2-abf0-03b84f7a540b 2016-09-19 07:42:27.490314 [DEBUG] sofia.c:6962 Channel sofia/internal/nobody@192.168.88.21 entering state [terminating][0] a377bf2e-d94c-4de2-abf0-03b84f7a540b 2016-09-19 07:42:27.490314 [NOTICE] sofia.c:8048 Hangup sofia/internal/nobody@192.168.88.21 [CS_EXECUTE] [NORMAL_UNSPECIFIED] 2016-09-19 07:42:27.500352 [DEBUG] switch_core_media.c:5544 sofia/internal/nobody@192.168.88.21 Video thread ended a377bf2e-d94c-4de2-abf0-03b84f7a540b 2016-09-19 07:42:27.511294 [INFO] conference_loop.c:1403 Channel leaving conference, cause: NORMAL_UNSPECIFIED a377bf2e-d94c-4de2-abf0-03b84f7a540b 2016-09-19 07:42:27.511294 [DEBUG] mod_conference.c:2215 sofia/internal/nobody@192.168.88.21 skip receive message [UNBRIDGE] (channel is hungup already) a377bf2e-d94c-4de2-abf0-03b84f7a540b 2016-09-19 07:42:27.511294 [DEBUG] switch_core_media.c:9305 sofia/internal/nobody@192.168.88.21 skip receive message [HARD_MUTE] (channel is hungup already) a377bf2e-d94c-4de2-abf0-03b84f7a540b 2016-09-19 07:42:27.511294 [DEBUG] switch_core_codec.c:258 Restore original codec. a377bf2e-d94c-4de2-abf0-03b84f7a540b 2016-09-19 07:42:27.511294 [DEBUG] switch_core_media.c:11114 sofia/internal/nobody@192.168.88.21 skip receive message [VIDEO_REFRESH_REQ] (channel is hungup already) a377bf2e-d94c-4de2-abf0-03b84f7a540b 2016-09-19 07:42:27.511294 [DEBUG] switch_core_session.c:2797 sofia/internal/nobody@192.168.88.21 skip receive message [APPLICATION_EXEC_COMPLETE] (channel is hungup already) a377bf2e-d94c-4de2-abf0-03b84f7a540b 2016-09-19 07:42:27.511294 [DEBUG] switch_core_state_machine.c:609 (sofia/internal/nobody@192.168.88.21) State EXECUTE going to sleep a377bf2e-d94c-4de2-abf0-03b84f7a540b 2016-09-19 07:42:27.511294 [DEBUG] switch_core_state_machine.c:543 (sofia/internal/nobody@192.168.88.21) Running State Change CS_HANGUP a377bf2e-d94c-4de2-abf0-03b84f7a540b 2016-09-19 07:42:27.511294 [DEBUG] switch_core_state_machine.c:809 (sofia/internal/nobody@192.168.88.21) Callstate Change ACTIVE -> HANGUP a377bf2e-d94c-4de2-abf0-03b84f7a540b 2016-09-19 07:42:27.511294 [DEBUG] switch_core_state_machine.c:811 (sofia/internal/nobody@192.168.88.21) State HANGUP And not session is established. The Hardware system only says: SIP_TRANSACTION_TIMEOUT and ends the call. So I think I have some codecs in common, but I have another problem why the call gets no answer. Can anyone point me in the right direction here? Thanks in advance! Jürgen Von: freeswitch-users-bounces@lists.freeswitch.org [mailto:freeswitch-users-bounces@lists.freeswitch.org] Im Auftrag von Michael Jerris Gesendet: Freitag, 16. September 2016 17:20 An: FreeSWITCH Users Help <freeswitch-users@lists.freeswitch.org> Betreff: Re: [Freeswitch-users] SIP Call from Videodevice sure, as long as you have codecs in common it should be no problem. Look at the logs to see why the call is failing. On Friday, September 16, 2016, Jürgen Wendler <jw@vision-gmbh.de<mailto:jw@vision-gmbh.de>> wrote: Hello everyone, i’m trying to make a SIP call from an external device (e.g. SONY or POLYCOM) to the “default” 3500 conference room which has the video-mcu-profile attached. When the call is ringing it does not appear to gets really connected. When I use X-Lite or another SIP softphone everything is working so far. But with external hardware devices I am not able to join the conference room. Does anyone have experience with calls from hardware videoconf systems via SIP to freeswitch? Best Regards Jürgen