[SIP Beyond VoIP] Video playback

Flanagan, Stephen SFlanagan at carouselindustries.com
Fri Jul 24 15:28:36 CEST 2020


Would like to bump this inquiry if I may.
Perhaps a little more detail would help.
I have a cucm server that has a sip trunk to the sylkserver.
The cucm server is setup so that when a jabber client dials ‘test at test.com’ it goes through the sip trunk to the sylkserver.
The sylkserver has a file in the /usr/share/sylkserver/playback directory called stella.mp4. The permissions on the file and directory are the same as the /usr/share/sylkserver/sounds directory.

The playback.ini file is setup to play stella.mp4 from the /usr/share/sylkserver/playback directory.

When we call the ‘test at test.com’ URI the sylkserver picks up the call and then subsequently hangs up.
Core.log:
2020-07-16 15:04:24.941 sip_endpoint.c Processing incoming message: Request msg INVITE/cseq=101 (rdata0x7fd8fc1afd80)
2020-07-16 15:04:24.942 tsx0x7fd8fc24b ..Transaction created for Request msg INVITE/cseq=101 (rdata0x7fd8fc1afd80)
2020-07-16 15:04:24.942 tsx0x7fd8fc24b .Incoming Request msg INVITE/cseq=101 (rdata0x7fd8fc1afd80) in state Null
2020-07-16 15:04:24.942 tsx0x7fd8fc24b ..State changed from Null to Trying, event=RX_MSG
2020-07-16 15:04:24.942 dlg0x7fd8fc24e ...Transaction tsx0x7fd8fc24ba98 state changed to Trying
2020-07-16 15:04:24.942 dlg0x7fd8fc24e .UAS dialog created
2020-07-16 15:04:24.942 dlg0x7fd8fc24e .Module mod-invite added as dialog usage, data=0x7fd8fc248bf8
2020-07-16 15:04:24.942 dlg0x7fd8fc24e ..Session count inc to 3 by mod-invite
2020-07-16 15:04:24.942 inv0x7fd8fc24e .UAS invite session created for dialog dlg0x7fd8fc24e218
2020-07-16 15:04:24.942       endpoint ..Response msg 100/INVITE/cseq=101 (tdta0x7fd8fc245c50) created
2020-07-16 15:04:24.942 dlg0x7fd8fc24e ..Initial answer Response msg 100/INVITE/cseq=101 (tdta0x7fd8fc245c50)
2020-07-16 15:04:24.950 inv0x7fd8fc24e .Sending Response msg 100/INVITE/cseq=101 (tdta0x7fd8fc245c50)
2020-07-16 15:04:24.950 dlg0x7fd8fc24e ..Sending Response msg 100/INVITE/cseq=101 (tdta0x7fd8fc245c50)
2020-07-16 15:04:24.950 tsx0x7fd8fc24b ..Sending Response msg 100/INVITE/cseq=101 (tdta0x7fd8fc245c50) in state Trying
2020-07-16 15:04:24.950 tsx0x7fd8fc24b ...State changed from Trying to Proceeding, event=TX_MSG
2020-07-16 15:04:24.950 dlg0x7fd8fc24e ....Transaction tsx0x7fd8fc24ba98 state changed to Proceeding
2020-07-16 15:04:24.951   conference.c Port 2 (mixer-port) transmitting to port 0 (Master/sound)
2020-07-16 15:04:24.951   conference.c Port 0 (Master/sound) transmitting to port 1 (mixer-port)
2020-07-16 15:04:24.954 inv0x7fd8fc24e .Sending Response msg 180/INVITE/cseq=101 (tdta0x7fd8fc245c50)
2020-07-16 15:04:24.954 dlg0x7fd8fc24e ..Sending Response msg 180/INVITE/cseq=101 (tdta0x7fd8fc245c50)
2020-07-16 15:04:24.954 tsx0x7fd8fc24b ..Sending Response msg 180/INVITE/cseq=101 (tdta0x7fd8fc245c50) in state Proceeding
2020-07-16 15:04:24.954 tsx0x7fd8fc24b ...State changed from Proceeding to Proceeding, event=TX_MSG
2020-07-16 15:04:24.954 dlg0x7fd8fc24e ....Transaction tsx0x7fd8fc24ba98 state changed to Proceeding
2020-07-16 15:04:25.969          vpx.c vpx default attr
2020-07-16 15:04:25.970 transport_zrtp attribute added: a=zrtp-hash:1.10 b9abba66fca404bde50040cce1aea95429f0cbf46b14358cd46e7783f4b12804
2020-07-16 15:04:25.970 transport_zrtp attribute added: a=zrtp-hash:1.10 d0ac9bded9119980b4d09304bff71ec0b6b5b6747363d6dc0d30b6c629313925
2020-07-16 15:04:25.971 inv0x7fd8fc24e .SDP negotiation done, status=0
2020-07-16 15:04:25.972 inv0x7fd8fc24e .Sending Response msg 200/INVITE/cseq=101 (tdta0x7fd8fc245c50)
2020-07-16 15:04:25.972 dlg0x7fd8fc24e ..Sending Response msg 200/INVITE/cseq=101 (tdta0x7fd8fc245c50)
2020-07-16 15:04:25.972 tsx0x7fd8fc24b ..Sending Response msg 200/INVITE/cseq=101 (tdta0x7fd8fc245c50) in state Proceeding
2020-07-16 15:04:25.972 tsx0x7fd8fc24b ...State changed from Proceeding to Completed, event=TX_MSG
2020-07-16 15:04:25.972 dlg0x7fd8fc24e ....Transaction tsx0x7fd8fc24ba98 state changed to Completed
2020-07-16 15:04:25.977          rtp.c pjmedia_rtp_session_init: ses=0x7fd90436643c, default_pt=9, ssrc=0x538e0646
2020-07-16 15:04:25.977          rtp.c pjmedia_rtp_session_init: ses=0x7fd904366a5c, default_pt=9, ssrc=0x538e0646
2020-07-16 15:04:25.977 udp0x7fd90431f SO_RCVBUF set to 212992
2020-07-16 15:04:25.977 udp0x7fd90431f SO_SNDBUF set to 212992
2020-07-16 15:04:25.977 strm0x7fd90435 Sending keep-alive (RTCP and empty RTP)
2020-07-16 15:04:25.978       stream.c Stream strm0x7fd90435e988 created
2020-07-16 15:04:25.978 strm0x7fd90435 Encoder stream started
2020-07-16 15:04:25.978 strm0x7fd90435 Decoder stream started
2020-07-16 15:04:25.978     resample.c resample created: high qualiy, large filter, in/out rate=16000/48000
2020-07-16 15:04:25.978     resample.c resample created: high qualiy, large filter, in/out rate=48000/16000
2020-07-16 15:04:25.978   conference.c Port 2 (mixer-port) transmitting to port 3 (strm0x7fd90435e988)
2020-07-16 15:04:25.978   conference.c Port 3 (strm0x7fd90435e988) transmitting to port 1 (mixer-port)
2020-07-16 15:04:25.978   conference.c Port 0 (Master/sound) transmitting to port 3 (strm0x7fd90435e988)
2020-07-16 15:04:25.978   conference.c Port 3 (strm0x7fd90435e988) transmitting to port 0 (Master/sound)
2020-07-16 15:04:25.979 sip_endpoint.c Processing incoming message: Request msg ACK/cseq=101 (rdata0x7fd8fc1afd80)
2020-07-16 15:04:25.979 dlg0x7fd8fc24e .Received Request msg ACK/cseq=101 (rdata0x7fd8fc1afd80)
2020-07-16 15:04:25.979 tsx0x7fd8fc24b ..Request to terminate transaction
2020-07-16 15:04:25.979 tsx0x7fd8fc24b ...State changed from Completed to Terminated, event=USER
2020-07-16 15:04:25.979 dlg0x7fd8fc24e ....Transaction tsx0x7fd8fc24ba98 state changed to Terminated
2020-07-16 15:04:25.980 strm0x7fd90435 Jitter buffer is bufferring (prefetch=0), plc invoked
2020-07-16 15:04:25.980 strm0x7fd90435 Sending keep-alive (RTCP and empty RTP)
2020-07-16 15:04:25.980 strm0x7fd90435 Start talksprut..
2020-07-16 15:04:25.987          rtp.c pjmedia_rtp_session_init: ses=0x7fd90433891c, default_pt=126, ssrc=0x4057718b
2020-07-16 15:04:25.987 vstdec0x7fd904 Decoding channel created 656x656 I420<-H264 15/1(~15)fps
2020-07-16 15:04:25.987          rtp.c pjmedia_rtp_session_init: ses=0x7fd904338a04, default_pt=126, ssrc=0x4057718b
2020-07-16 15:04:25.987 vstenc0x7fd904 Encoding channel created 720x480 I420->H264 15/1(~15)fps
2020-07-16 15:04:25.987 udp0x7fd9043a4 SO_RCVBUF set to 212992
2020-07-16 15:04:25.987 udp0x7fd9043a4 SO_SNDBUF set to 212992
2020-07-16 15:04:25.987   vid_stream.c Video stream vstrm0x7fd9043381c8 created
2020-07-16 15:04:25.987 vstenc0x7fd904 Encoder stream started
2020-07-16 15:04:25.987 vstdec0x7fd904 Decoder stream started
2020-07-16 15:04:25.990 tsx0x7fd8fc24b Timeout timer event
2020-07-16 15:04:25.990 tsx0x7fd8fc24b .State changed from Terminated to Destroyed, event=TIMER
2020-07-16 15:04:25.990 tdta0x7fd8fc24 ..Destroying txdata Response msg 200/INVITE/cseq=101 (tdta0x7fd8fc245c50)
2020-07-16 15:04:25.990 tsx0x7fd8fc24b Transaction destroyed!
2020-07-16 15:04:25.990    converter.c Converter 0x7fd904012438 (libswscale) created for video: 1280x720 YUY2 -> 720x480 I420
2020-07-16 15:04:25.990 colorbar_dev.c Starting cbar video stream
2020-07-16 15:04:25.993   wav_player.c actual value|expected riff=1c000000|46464952, wave=3234706d|45564157 fmt=1000000|20746d66
2020-07-16 15:04:25.994   conference.c Port 3 (strm0x7fd90435e988) stop transmitting to port 0 (Master/sound)
2020-07-16 15:04:25.994   conference.c Port 0 (Master/sound) stop transmitting to port 3 (strm0x7fd90435e988)
2020-07-16 15:04:25.994       endpoint .Request msg BYE/cseq=11580 (tdta0x7fd9043a6d60) created.
2020-07-16 15:04:25.994 inv0x7fd8fc24e .Sending Request msg BYE/cseq=11580 (tdta0x7fd9043a6d60)
2020-07-16 15:04:25.994 dlg0x7fd8fc24e ..Sending Request msg BYE/cseq=11580 (tdta0x7fd9043a6d60)
2020-07-16 15:04:25.994 tsx0x7fd9043a3 ...Transaction created for Request msg BYE/cseq=11579 (tdta0x7fd9043a6d60)
2020-07-16 15:04:25.994 tsx0x7fd9043a3 ..Sending Request msg BYE/cseq=11579 (tdta0x7fd9043a6d60) in state Null
2020-07-16 15:04:25.994  sip_resolve.c ...Target '192.168.15.60:5060' type=TCP resolved to '192.168.15.60:5060' type=TCP (TCP transport)
2020-07-16 15:04:25.994 tsx0x7fd9043a3 ...State changed from Null to Calling, event=TX_MSG
2020-07-16 15:04:25.994 dlg0x7fd8fc24e ....Transaction tsx0x7fd9043a31b8 state changed to Calling
2020-07-16 15:04:26.088 sip_endpoint.c Processing incoming message: Response msg 200/BYE/cseq=11579 (rdata0x7fd8fc1afd80)
2020-07-16 15:04:26.088 tsx0x7fd9043a3 .Incoming Response msg 200/BYE/cseq=11579 (rdata0x7fd8fc1afd80) in state Calling
2020-07-16 15:04:26.088 tsx0x7fd9043a3 ..State changed from Calling to Completed, event=RX_MSG
2020-07-16 15:04:26.088 dlg0x7fd8fc24e ...Received Response msg 200/BYE/cseq=11579 (rdata0x7fd8fc1afd80)
2020-07-16 15:04:26.088 dlg0x7fd8fc24e ...Transaction tsx0x7fd9043a31b8 state changed to Completed
2020-07-16 15:04:26.088 dlg0x7fd8fc24e .....Session count dec to 1 by mod-invite
2020-07-16 15:04:26.089 tsx0x7fd9043a3 Timeout timer event
2020-07-16 15:04:26.089 tsx0x7fd9043a3 .State changed from Completed to Terminated, event=TIMER
2020-07-16 15:04:26.089 dlg0x7fd8fc24e ..Transaction tsx0x7fd9043a31b8 state changed to Terminated
2020-07-16 15:04:26.089 dlg0x7fd8fc24e ...Dialog destroyed
2020-07-16 15:04:26.089 tsx0x7fd9043a3 Timeout timer event
2020-07-16 15:04:26.089 tsx0x7fd9043a3 .State changed from Terminated to Destroyed, event=TIMER
2020-07-16 15:04:26.089 tdta0x7fd9043a ..Destroying txdata Request msg BYE/cseq=11579 (tdta0x7fd9043a6d60)
2020-07-16 15:04:26.089 tsx0x7fd9043a3 Transaction destroyed!
2020-07-16 15:04:26.094 strm0x7fd90435 JB summary:
  size=0/eff=0 prefetch=0 level=0
  delay (min/max/avg/dev)=0/0/0/0 ms
  burst (min/max/avg/dev)=0/0/0/0 frames
  lost=0 discard=0 empty=1
2020-07-16 15:04:26.094 transport_zrtp Media stop - encrypted packets: 0, decrypted packets: 0
2020-07-16 15:04:26.094    converter.c Converter 0x7fd904012438 destroyed
2020-07-16 15:04:26.174 vstdec0x7fd904 RTP decode error: Invalid RTP version (PJMEDIA_RTP_EINVER) [err:220122]
2020-07-16 15:04:26.191 transport_zrtp Media stop - encrypted packets: 0, decrypted packets: 0
2020-07-16 15:04:26.191 transport_zrtp Destroy - encrypted packets: 0, decrypted packets: 0
2020-07-16 15:04:26.193 colorbar_dev.c Stopping cbar video stream
2020-07-16 15:04:26.194 vstdec0x7fd904 JB summary:
  size=0/eff=0 prefetch=0 level=0
  delay (min/max/avg/dev)=0/0/0/0 ms
  burst (min/max/avg/dev)=0/0/0/0 frames
  lost=0 discard=0 empty=0
2020-07-16 15:04:26.194 transport_zrtp Media stop - encrypted packets: 0, decrypted packets: 0
2020-07-16 15:04:26.194 transport_zrtp Media stop - encrypted packets: 0, decrypted packets: 0
2020-07-16 15:04:26.194 transport_zrtp Destroy - encrypted packets: 0, decrypted packets: 0
^C
carousel at car-sylk:/var/log/sylkserver$


Here is the notification.log
////////////////////////////
2020-07-16 15:04:24.949503 Notification name=SIPInvitationChangedState sender=<sipsimple.core._core.Invitation object at 0x7fd8f9954210> data=NotificationData(originator='remote', body='v=0\r\no=CiscoSystemsCCM-SIP 120 1 IN IP4 192.168.15.60\r\ns=SIP Call\r\nc=IN IP4 192.168.15.20\r\nb=TIAS:1536000\r\nb=AS:1536\r\nt=0 0\r\na=cisco-mari:v1\r\na=cisco-mari-rate\r\nm=audio 21410 RTP/AVP 114 9 104 105 0 8 18 111 101\r\na=extmap:14/sendrecv http://protocols.cisco.com/timestamp#100us\r\na=rtpmap:114 opus/48000/1\r\na=rtpmap:9 G722/8000\r\na=rtpmap:104 G7221/16000\r\na=fmtp:104 bitrate=32000\r\na=rtpmap:105 G7221/16000\r\na=fmtp:105 bitrate=24000\r\na=rtpmap:0 PCMU/8000\r\na=rtpmap:8 PCMA/8000\r\na=rtpmap:111 X-ULPFECUC/8000\r\na=fmtp:111  max_esel=1420;m=8;max_n=32;FEC_ORDER=FEC_SRTP\r\na=rtpmap:18 G729/8000\r\na=fmtp:18 annexb=no\r\na=rtpmap:101 telephone-event/8000\r\na=fmtp:101 0-15\r\na=trafficclass:conversational.audio.avconf.aq:admitted\r\nm=video 30094 RTP/AVP 126 97 111\r\nb=TIAS:1536000\r\na=label:11\r\na=extmap:14/sendrecv http://protocols.cisco.com/timestamp#100us\r\na=rtpmap:126 H264/90000\r\na=fmtp:126 profile-level-id=428015;packetization-mode=1;max-mbps=108000;max-fs=3601;max-rcmd-nalu-size=1344;level-asymmetry-allowed=1\r\na=imageattr:126 recv [x=[32:1:1280],y=[18:1:720],par=1.7778,q=1.00]\r\na=rtpmap:97 H264/90000\r\na=fmtp:97 profile-level-id=428015;packetization-mode=0;max-mbps=108000;max-fs=3601;level-asymmetry-allowed=1\r\na=imageattr:97 recv [x=[32:1:1280],y=[18:1:720],par=1.7778,q=1.00]\r\na=rtpmap:111 X-ULPFECUC/90000\r\na=fmtp:111  max_esel=1420;m=8;max_n=32;FEC_ORDER=FEC_SRTP\r\na=content:main\r\na=rtcp-fb:* ccm fir\r\na=rtcp-fb:* ccm tmmbr\r\na=rtcp-fb:* nack pli\r\na=trafficclass:conversational.video.avconf.aq:admitted\r\nm=application 32568 RTP/AVP 125\r\na=rtpmap:125 H224/4800\r\na=rtcp:32569\r\n', state='incoming', prev_state=None, headers={'P-Asserted-Identity': FrozenHeader('P-Asserted-Identity', '"meg" <sip:flan at fn-cucm-pub.fndomain.local>'), 'Content-Length': 1573, 'Expires': 180, 'From': FrozenFromHeader(FrozenSIPURI('fn-cucm-pub.fndomain.local', 'flan', None, None, False, frozendict({}), frozendict({})), u'meg', frozendict({'tag': '120~ee8478a2-35a3-4b88-be52-c76b326268fa-21072942'})), 'Session-Expires': FrozenHeader('Session-Expires', '1800'), 'To': FrozenToHeader(FrozenSIPURI('test.com', 'test', None, None, False, frozendict({}), frozendict({})), None, frozendict({})), 'Min-SE': FrozenHeader('Min-SE', '1800'), 'Call-ID': FrozenHeader('Call-ID', 'a14dd180-1eb1e578-4f-3c0fa8c0 at 192.168.15.60'), 'Allow-Events': ['presence', 'kpml'], 'User-Agent': FrozenHeader('User-Agent', 'Cisco-CUCM12.5'), 'Date': FrozenHeader('Date', 'Thu, 16 Jul 2020 15:04:24 GMT'), 'Session-ID': FrozenHeader('Session-ID', '3aa6955b00105000a0007c327603a14e;remote=00000000000000000000000000000000'), 'Call-Info': FrozenHeader('Call-Info', '<sip:192.168.15.60:5060>;method="NOTIFY;Event=telephone-event;Duration=500"'), 'Cisco-Guid': FrozenHeader('Cisco-Guid', '2706231680-0000065536-0000000005-1007659200'), 'Allow': ['INVITE', 'OPTIONS', 'INFO', 'BYE', 'CANCEL', 'ACK', 'PRACK', 'UPDATE', 'REFER', 'SUBSCRIBE', 'NOTIFY'], 'Max-Forwards': 69, 'Via': [FrozenViaHeader('TCP', '192.168.15.60', 5060, frozendict({'received': '192.168.15.60', 'branch': 'z9hG4bK4f66e96085'}))], 'Supported': ['timer', 'resource-priority', 'replaces', 'X-cisco-srtp-fallback', 'X-cisco-original-called'], 'Remote-Party-ID': FrozenHeader('Remote-Party-ID', '"meg" <sip:flan at fn-cucm-pub.fndomain.local>;party=calling;screen=yes;privacy=off'), 'Contact': [FrozenContactHeader(FrozenSIPURI('192.168.15.60', 'flan', None, 5060, False, frozendict({'transport': 'tcp'}), frozendict({})), None, frozendict({'q': '0.0', 'video': None, 'audio': None, '+u.sip!devicename.ccm.cisco.com': '"TABMEG"', 'bfcp': None}))], 'CSeq': (101, 'INVITE'), 'Content-Type': FrozenContentTypeHeader('application/sdp', frozendict({}))}, method='INVITE', request_uri=FrozenSIPURI('test.com', 'test', None, None, False, frozendict({}), frozendict({})))
2020-07-16 15:04:24.951839 Notification name=SIPSessionNewIncoming sender=<sylk.session.Session object at 0x7fd90805a510> data=NotificationData(headers={'P-Asserted-Identity': FrozenHeader('P-Asserted-Identity', '"meg" <sip:flan at fn-cucm-pub.fndomain.local>'), 'Content-Length': 1573, 'Expires': 180, 'From': FrozenFromHeader(FrozenSIPURI('fn-cucm-pub.fndomain.local', 'flan', None, None, False, frozendict({}), frozendict({})), u'meg', frozendict({'tag': '120~ee8478a2-35a3-4b88-be52-c76b326268fa-21072942'})), 'Session-Expires': FrozenHeader('Session-Expires', '1800'), 'To': FrozenToHeader(FrozenSIPURI('test.com', 'test', None, None, False, frozendict({}), frozendict({})), None, frozendict({})), 'Min-SE': FrozenHeader('Min-SE', '1800'), 'Call-ID': FrozenHeader('Call-ID', 'a14dd180-1eb1e578-4f-3c0fa8c0 at 192.168.15.60'), 'Allow-Events': ['presence', 'kpml'], 'User-Agent': FrozenHeader('User-Agent', 'Cisco-CUCM12.5'), 'Date': FrozenHeader('Date', 'Thu, 16 Jul 2020 15:04:24 GMT'), 'Session-ID': FrozenHeader('Session-ID', '3aa6955b00105000a0007c327603a14e;remote=00000000000000000000000000000000'), 'Call-Info': FrozenHeader('Call-Info', '<sip:192.168.15.60:5060>;method="NOTIFY;Event=telephone-event;Duration=500"'), 'Cisco-Guid': FrozenHeader('Cisco-Guid', '2706231680-0000065536-0000000005-1007659200'), 'Allow': ['INVITE', 'OPTIONS', 'INFO', 'BYE', 'CANCEL', 'ACK', 'PRACK', 'UPDATE', 'REFER', 'SUBSCRIBE', 'NOTIFY'], 'Max-Forwards': 69, 'Via': [FrozenViaHeader('TCP', '192.168.15.60', 5060, frozendict({'received': '192.168.15.60', 'branch': 'z9hG4bK4f66e96085'}))], 'Supported': ['timer', 'resource-priority', 'replaces', 'X-cisco-srtp-fallback', 'X-cisco-original-called'], 'Remote-Party-ID': FrozenHeader('Remote-Party-ID', '"meg" <sip:flan at fn-cucm-pub.fndomain.local>;party=calling;screen=yes;privacy=off'), 'Contact': [FrozenContactHeader(FrozenSIPURI('192.168.15.60', 'flan', None, 5060, False, frozendict({'transport': 'tcp'}), frozendict({})), None, frozendict({'q': '0.0', 'video': None, 'audio': None, '+u.sip!devicename.ccm.cisco.com': '"TABMEG"', 'bfcp': None}))], 'CSeq': (101, 'INVITE'), 'Content-Type': FrozenContentTypeHeader('application/sdp', frozendict({}))}, streams=[<sipsimple.streams.rtp.audio.AudioStream object at 0x7fd8f9952510>, <sipsimple.streams.rtp.video.VideoStream object at 0x7fd8f9952610>])
2020-07-16 15:04:24.958223 Notification name=SIPInvitationChangedState sender=<sipsimple.core._core.Invitation object at 0x7fd8f9954210> data=NotificationData(originator='local', body=None, reason='Ringing', code=180, headers={'Via': [FrozenViaHeader('TCP', '192.168.15.60', 5060, frozendict({'received': '192.168.15.60', 'branch': 'z9hG4bK4f66e96085'}))], 'From': FrozenFromHeader(FrozenSIPURI('fn-cucm-pub.fndomain.local', 'flan', None, None, False, frozendict({}), frozendict({})), u'meg', frozendict({'tag': '120~ee8478a2-35a3-4b88-be52-c76b326268fa-21072942'})), 'Server': FrozenHeader('Server', 'SylkServer-5.6.0'), 'To': FrozenToHeader(FrozenSIPURI('test.com', 'test', None, None, False, frozendict({}), frozendict({})), None, frozendict({'tag': 'abf519e5-7b7b-43f7-b305-cb9affb7ca33'})), 'Contact': [FrozenContactHeader(FrozenSIPURI('192.168.15.25', 'test', None, 5060, False, frozendict({'transport': 'tcp'}), frozendict({})), None, frozendict({'q': '0.0'}))], 'CSeq': (101, 'INVITE'), 'Allow': ['SUBSCRIBE', 'NOTIFY', 'PRACK', 'INVITE', 'ACK', 'BYE', 'CANCEL', 'UPDATE', 'MESSAGE', 'REFER'], 'Call-ID': FrozenHeader('Call-ID', 'a14dd180-1eb1e578-4f-3c0fa8c0 at 192.168.15.60')}, prev_state='incoming', state='early')
2020-07-16 15:04:25.965897 Notification name=RTPTransportDidInitialize sender=<sipsimple.core._core.RTPTransport object at 0x7fd8f99312d0> data=NotificationData()
2020-07-16 15:04:25.967418 Notification name=MediaStreamDidInitialize sender=<sipsimple.streams.rtp.audio.AudioStream object at 0x7fd8f9952510> data=NotificationData()
2020-07-16 15:04:25.968632 Notification name=RTPTransportDidInitialize sender=<sipsimple.core._core.RTPTransport object at 0x7fd8f9931550> data=NotificationData()
2020-07-16 15:04:25.972764 Notification name=SIPSessionWillStart sender=<sylk.session.Session object at 0x7fd90805a510> data=NotificationData()
2020-07-16 15:04:25.969628 Notification name=MediaStreamDidInitialize sender=<sipsimple.streams.rtp.video.VideoStream object at 0x7fd8f9952610> data=NotificationData()
2020-07-16 15:04:25.977357 Notification name=SIPInvitationGotSDPUpdate sender=<sipsimple.core._core.Invitation object at 0x7fd8f9954210> data=NotificationData(local_sdp=FrozenSDPSession('192.168.15.25', 3803900665, 3803900666, '-', 'IN', 'IP4', 'SylkServer-5.6.0', None, 0, 0, frozenlist([]), frozenlist([]), frozenlist([FrozenSDPMediaStream('audio', 50008, 'RTP/AVP', 1, frozenlist(['9', '101']), FrozenSDPConnection('192.168.15.25', 'IN', 'IP4'), frozenlist([FrozenSDPAttribute('rtcp', '50009'), FrozenSDPAttribute('rtpmap', '9 G722/8000'), FrozenSDPAttribute('rtpmap', '101 telephone-event/8000'), FrozenSDPAttribute('fmtp', '101 0-16'), FrozenSDPAttribute('zrtp-hash', '1.10 b9abba66fca404bde50040cce1aea95429f0cbf46b14358cd46e7783f4b12804'), FrozenSDPAttribute('sendrecv', '')]), frozenlist([])), FrozenSDPMediaStream('video', 50010, 'RTP/AVP', 1, frozenlist(['126']), FrozenSDPConnection('192.168.15.25', 'IN', 'IP4'), frozenlist([FrozenSDPAttribute('rtcp', '50011'), FrozenSDPAttribute('zrtp-hash', '1.10 d0ac9bded9119980b4d09304bff71ec0b6b5b6747363d6dc0d30b6c629313925'), FrozenSDPAttribute('sendrecv', ''), FrozenSDPAttribute('rtpmap', '126 H264/90000'), FrozenSDPAttribute('fmtp', '126 profile-level-id=42801e; packetization-mode=1')]), frozenlist([FrozenSDPBandwidthInfo('TIAS', 256000)])), FrozenSDPMediaStream('application', 0, 'RTP/AVP', 0, frozenlist(['125']), FrozenSDPConnection('192.168.15.25', 'IN', 'IP4'), frozenlist([]), frozenlist([]))])), succeeded=True, remote_sdp=FrozenSDPSession('192.168.15.60', 120, 1, 'CiscoSystemsCCM-SIP', 'IN', 'IP4', 'SIP Call', FrozenSDPConnection('192.168.15.20', 'IN', 'IP4'), 0, 0, frozenlist([FrozenSDPAttribute('cisco-mari', 'v1'), FrozenSDPAttribute('cisco-mari-rate', '')]), frozenlist([FrozenSDPBandwidthInfo('TIAS', 1536000), FrozenSDPBandwidthInfo('AS', 1536)]), frozenlist([FrozenSDPMediaStream('audio', 21410, 'RTP/AVP', 0, frozenlist(['114', '9', '104', '105', '0', '8', '18', '111', '101']), None, frozenlist([FrozenSDPAttribute('extmap', '14/sendrecv http://protocols.cisco.com/timestamp#100us'), FrozenSDPAttribute('rtpmap', '114 opus/48000/1'), FrozenSDPAttribute('rtpmap', '9 G722/8000'), FrozenSDPAttribute('rtpmap', '104 G7221/16000'), FrozenSDPAttribute('fmtp', '104 bitrate=32000'), FrozenSDPAttribute('rtpmap', '105 G7221/16000'), FrozenSDPAttribute('fmtp', '105 bitrate=24000'), FrozenSDPAttribute('rtpmap', '0 PCMU/8000'), FrozenSDPAttribute('rtpmap', '8 PCMA/8000'), FrozenSDPAttribute('rtpmap', '111 X-ULPFECUC/8000'), FrozenSDPAttribute('fmtp', '111  max_esel=1420;m=8;max_n=32;FEC_ORDER=FEC_SRTP'), FrozenSDPAttribute('rtpmap', '18 G729/8000'), FrozenSDPAttribute('fmtp', '18 annexb=no'), FrozenSDPAttribute('rtpmap', '101 telephone-event/8000'), FrozenSDPAttribute('fmtp', '101 0-15'), FrozenSDPAttribute('trafficclass', 'conversational.audio.avconf.aq:admitted')]), frozenlist([])), FrozenSDPMediaStream('video', 30094, 'RTP/AVP', 0, frozenlist(['126', '97', '111']), None, frozenlist([FrozenSDPAttribute('label', '11'), FrozenSDPAttribute('extmap', '14/sendrecv http://protocols.cisco.com/timestamp#100us'), FrozenSDPAttribute('rtpmap', '126 H264/90000'), FrozenSDPAttribute('fmtp', '126 profile-level-id=428015;packetization-mode=1;max-mbps=108000;max-fs=3601;max-rcmd-nalu-size=1344;level-asymmetry-allowed=1'), FrozenSDPAttribute('imageattr', '126 recv [x=[32:1:1280],y=[18:1:720],par=1.7778,q=1.00]'), FrozenSDPAttribute('rtpmap', '97 H264/90000'), FrozenSDPAttribute('fmtp', '97 profile-level-id=428015;packetization-mode=0;max-mbps=108000;max-fs=3601;level-asymmetry-allowed=1'), FrozenSDPAttribute('imageattr', '97 recv [x=[32:1:1280],y=[18:1:720],par=1.7778,q=1.00]'), FrozenSDPAttribute('rtpmap', '111 X-ULPFECUC/90000'), FrozenSDPAttribute('fmtp', '111  max_esel=1420;m=8;max_n=32;FEC_ORDER=FEC_SRTP'), FrozenSDPAttribute('content', 'main'), FrozenSDPAttribute('rtcp-fb', '* ccm fir'), FrozenSDPAttribute('rtcp-fb', '* ccm tmmbr'), FrozenSDPAttribute('rtcp-fb', '* nack pli'), FrozenSDPAttribute('trafficclass', 'conversational.video.avconf.aq:admitted')]), frozenlist([FrozenSDPBandwidthInfo('TIAS', 1536000)])), FrozenSDPMediaStream('application', 0, 'RTP/AVP', 0, frozenlist(['125']), None, frozenlist([FrozenSDPAttribute('rtpmap', '125 H224/4800'), FrozenSDPAttribute('rtcp', '32569')]), frozenlist([]))])))
2020-07-16 15:04:25.979293 Notification name=SIPInvitationChangedState sender=<sipsimple.core._core.Invitation object at 0x7fd8f9954210> data=NotificationData(originator='local', body='v=0\r\no=- 3803900665 3803900666 IN IP4 192.168.15.25\r\ns=SylkServer-5.6.0\r\nt=0 0\r\nm=audio 50008 RTP/AVP 9 101\r\nc=IN IP4 192.168.15.25\r\na=rtcp:50009\r\na=rtpmap:9 G722/8000\r\na=rtpmap:101 telephone-event/8000\r\na=fmtp:101 0-16\r\na=zrtp-hash:1.10 b9abba66fca404bde50040cce1aea95429f0cbf46b14358cd46e7783f4b12804\r\na=sendrecv\r\nm=video 50010 RTP/AVP 126\r\nc=IN IP4 192.168.15.25\r\nb=TIAS:256000\r\na=rtcp:50011\r\na=zrtp-hash:1.10 d0ac9bded9119980b4d09304bff71ec0b6b5b6747363d6dc0d30b6c629313925\r\na=sendrecv\r\na=rtpmap:126 H264/90000\r\na=fmtp:126 profile-level-id=42801e; packetization-mode=1\r\nm=application 0 RTP/AVP 125\r\nc=IN IP4 192.168.15.25\r\n', reason='OK', code=200, headers={'Via': [FrozenViaHeader('TCP', '192.168.15.60', 5060, frozendict({'received': '192.168.15.60', 'branch': 'z9hG4bK4f66e96085'}))], 'From': FrozenFromHeader(FrozenSIPURI('fn-cucm-pub.fndomain.local', 'flan', None, None, False, frozendict({}), frozendict({})), u'meg', frozendict({'tag': '120~ee8478a2-35a3-4b88-be52-c76b326268fa-21072942'})), 'Supported': ['100rel', 'replaces', 'norefersub', 'gruu'], 'Server': FrozenHeader('Server', 'SylkServer-5.6.0'), 'To': FrozenToHeader(FrozenSIPURI('test.com', 'test', None, None, False, frozendict({}), frozendict({})), None, frozendict({'tag': 'abf519e5-7b7b-43f7-b305-cb9affb7ca33'})), 'Contact': [FrozenContactHeader(FrozenSIPURI('192.168.15.25', 'sylkserver', None, 5060, False, frozendict({'transport': 'tcp'}), frozendict({})), None, frozendict({'q': '0.0'}))], 'CSeq': (101, 'INVITE'), 'Allow': ['SUBSCRIBE', 'NOTIFY', 'PRACK', 'INVITE', 'ACK', 'BYE', 'CANCEL', 'UPDATE', 'MESSAGE', 'REFER'], 'Call-ID': FrozenHeader('Call-ID', 'a14dd180-1eb1e578-4f-3c0fa8c0 at 192.168.15.60')}, prev_state='early', state='connecting')
2020-07-16 15:04:25.978564 Notification name=MediaStreamDidStart sender=<sipsimple.streams.rtp.audio.AudioStream object at 0x7fd8f9952510> data=NotificationData()
2020-07-16 15:04:25.990047 Notification name=SIPInvitationChangedState sender=<sipsimple.core._core.Invitation object at 0x7fd8f9954210> data=NotificationData(originator='remote', body=None, sub_state='normal', headers={'Content-Length': 0, 'Via': [FrozenViaHeader('TCP', '192.168.15.60', 5060, frozendict({'received': '192.168.15.60', 'branch': 'z9hG4bK502a05e926'}))], 'From': FrozenFromHeader(FrozenSIPURI('fn-cucm-pub.fndomain.local', 'flan', None, None, False, frozendict({}), frozendict({})), u'meg', frozendict({'tag': '120~ee8478a2-35a3-4b88-be52-c76b326268fa-21072942'})), 'Allow-Events': ['presence', 'kpml'], 'User-Agent': FrozenHeader('User-Agent', 'Cisco-CUCM12.5'), 'To': FrozenToHeader(FrozenSIPURI('test.com', 'test', None, None, False, frozendict({}), frozendict({})), None, frozendict({'tag': 'abf519e5-7b7b-43f7-b305-cb9affb7ca33'})), 'CSeq': (101, 'ACK'), 'Max-Forwards': 70, 'Date': FrozenHeader('Date', 'Thu, 16 Jul 2020 15:04:24 GMT'), 'Call-ID': FrozenHeader('Call-ID', 'a14dd180-1eb1e578-4f-3c0fa8c0 at 192.168.15.60')}, state='connected', prev_state='connecting', method='ACK', request_uri=FrozenSIPURI('192.168.15.25', 'sylkserver', None, 5060, False, frozendict({'transport': 'tcp'}), frozendict({})))
2020-07-16 15:04:25.990994 Notification name=MediaStreamDidStart sender=<sipsimple.streams.rtp.video.VideoStream object at 0x7fd8f9952610> data=NotificationData()
2020-07-16 15:04:25.991415 Notification name=ExponentialTimerDidTimeout sender=<sipsimple.util.ExponentialTimer object at 0x7fd8f9947b90> data=NotificationData()
2020-07-16 15:04:25.991909 Notification name=SIPSessionDidStart sender=<sylk.session.Session object at 0x7fd90805a510> data=NotificationData(streams=[<sipsimple.streams.rtp.audio.AudioStream object at 0x7fd8f9952510>, <sipsimple.streams.rtp.video.VideoStream object at 0x7fd8f9952610>])
2020-07-16 15:04:25.993627 Notification name=WavePlayerDidFail sender=<sipsimple.audio.WavePlayer object at 0x7fd8fa4f6910> data=NotificationData(error=PJSIPError('Could not open WAV file: Not a valid WAVE file (PJMEDIA_ENOTVALIDWAVE)',))
2020-07-16 15:04:25.994301 Notification name=SIPSessionWillEnd sender=<sylk.session.Session object at 0x7fd90805a510> data=NotificationData(originator='local')
2020-07-16 15:04:26.089373 Notification name=SIPInvitationChangedState sender=<sipsimple.core._core.Invitation object at 0x7fd8f9954210> data=NotificationData(originator='local', body=None, prev_sub_state='normal', headers={'Via': [FrozenViaHeader('TCP', '192.168.15.25', 5060, frozendict({'alias': None, 'rport': 0, 'branch': 'z9hG4bKPjabad1cd8-3c1f-476f-ae45-719ebb6604d8'}))], 'From': FrozenFromHeader(FrozenSIPURI('test.com', 'test', None, None, False, frozendict({}), frozendict({})), None, frozendict({'tag': 'abf519e5-7b7b-43f7-b305-cb9affb7ca33'})), 'User-Agent': FrozenHeader('User-Agent', 'SylkServer-5.6.0'), 'To': FrozenToHeader(FrozenSIPURI('fn-cucm-pub.fndomain.local', 'flan', None, None, False, frozendict({}), frozendict({})), u'meg', frozendict({'tag': '120~ee8478a2-35a3-4b88-be52-c76b326268fa-21072942'})), 'CSeq': (11579, 'BYE'), 'Call-ID': FrozenHeader('Call-ID', 'a14dd180-1eb1e578-4f-3c0fa8c0 at 192.168.15.60'), 'Max-Forwards': 70}, state='disconnecting', prev_state='connected', method='BYE', request_uri=FrozenSIPURI('192.168.15.60', 'flan', None, 5060, False, frozendict({'transport': 'tcp'}), frozendict({})))
2020-07-16 15:04:26.089579 Notification name=SIPInvitationChangedState sender=<sipsimple.core._core.Invitation object at 0x7fd8f9954210> data=NotificationData(originator='remote', body=None, code=200, disconnect_reason='user request', state='disconnected', headers={'Content-Length': 0, 'Via': [FrozenViaHeader('TCP', '192.168.15.25', 5060, frozendict({'alias': None, 'rport': 0, 'branch': 'z9hG4bKPjabad1cd8-3c1f-476f-ae45-719ebb6604d8'}))], 'From': FrozenFromHeader(FrozenSIPURI('test.com', 'test', None, None, False, frozendict({}), frozendict({})), None, frozendict({'tag': 'abf519e5-7b7b-43f7-b305-cb9affb7ca33'})), 'Server': FrozenHeader('Server', 'Cisco-CUCM12.5'), 'To': FrozenToHeader(FrozenSIPURI('fn-cucm-pub.fndomain.local', 'flan', None, None, False, frozendict({}), frozendict({})), u'meg', frozendict({'tag': '120~ee8478a2-35a3-4b88-be52-c76b326268fa-21072942'})), 'CSeq': (11579, 'BYE'), 'Date': FrozenHeader('Date', 'Thu, 16 Jul 2020 15:04:26 GMT'), 'Call-ID': FrozenHeader('Call-ID', 'a14dd180-1eb1e578-4f-3c0fa8c0 at 192.168.15.60')}, reason='Normal call clearing', prev_state='disconnecting')
2020-07-16 15:04:26.093727 Notification name=SIPSessionDidEnd sender=<sylk.session.Session object at 0x7fd90805a510> data=NotificationData(originator='local', end_reason='user request')
2020-07-16 15:04:26.094512 Notification name=MediaStreamWillEnd sender=<sipsimple.streams.rtp.audio.AudioStream object at 0x7fd8f9952510> data=NotificationData()
2020-07-16 15:04:26.094699 Notification name=MediaStreamDidEnd sender=<sipsimple.streams.rtp.audio.AudioStream object at 0x7fd8f9952510> data=NotificationData(error=None)
2020-07-16 15:04:26.094809 Notification name=MediaStreamWillEnd sender=<sipsimple.streams.rtp.video.VideoStream object at 0x7fd8f9952610> data=NotificationData()
2020-07-16 15:04:26.097734 Notification name=MediaStreamDidEnd sender=<sipsimple.streams.rtp.video.VideoStream object at 0x7fd8f9952610> data=NotificationData(error=None)
^C
carousel at car-sylk:/var/log/sylkserver$


and here is the sip-trace.log

///////////////////////////////////////
2020-07-16 15:04:24.944114 Packet 1807 INCOMING TCP 192.168.15.60:35033 -> 192.168.15.25:5060
INVITE sip:test at test.com SIP/2.0
Via: SIP/2.0/TCP 192.168.15.60:5060;branch=z9hG4bK4f66e96085
From: "meg" <sip:flan at fn-cucm-pub.fndomain.local>;tag=120~ee8478a2-35a3-4b88-be52-c76b326268fa-21072942
To: <sip:test at test.com>
Date: Thu, 16 Jul 2020 15:04:24 GMT
Call-ID: a14dd180-1eb1e578-4f-3c0fa8c0 at 192.168.15.60
Supported: timer,resource-priority,replaces
Min-SE:  1800
User-Agent: Cisco-CUCM12.5
Allow: INVITE, OPTIONS, INFO, BYE, CANCEL, ACK, PRACK, UPDATE, REFER, SUBSCRIBE, NOTIFY
CSeq: 101 INVITE
Expires: 180
Allow-Events: presence, kpml
Supported: X-cisco-srtp-fallback,X-cisco-original-called
Call-Info: <sip:192.168.15.60:5060>;method="NOTIFY;Event=telephone-event;Duration=500"
Call-Info: <urn:x-cisco-remotecc:callinfo>;x-cisco-video-traffic-class=DESKTOP;x-cisco-qos-tcl=true
Session-ID: 3aa6955b00105000a0007c327603a14e;remote=00000000000000000000000000000000
Cisco-Guid: 2706231680-0000065536-0000000005-1007659200
Session-Expires:  1800
P-Asserted-Identity: "meg" <sip:flan at fn-cucm-pub.fndomain.local>
Remote-Party-ID: "meg" <sip:flan at fn-cucm-pub.fndomain.local>;party=calling;screen=yes;privacy=off
Contact: <sip:flan at 192.168.15.60:5060;transport=tcp>;video;audio;+u.sip!devicename.ccm.cisco.com="TABMEG";bfcp
Max-Forwards: 69
Content-Type: application/sdp
Content-Length: 1573

v=0
o=CiscoSystemsCCM-SIP 120 1 IN IP4 192.168.15.60
s=SIP Call
c=IN IP4 192.168.15.20
b=TIAS:1536000
b=AS:1536
t=0 0
a=cisco-mari:v1
a=cisco-mari-rate
m=audio 21410 RTP/AVP 114 9 104 105 0 8 18 111 101
a=extmap:14/sendrecv http://protocols.cisco.com/timestamp#100us
a=rtpmap:114 opus/48000/2
a=rtpmap:9 G722/8000
a=rtpmap:104 G7221/16000
a=fmtp:104 bitrate=32000
a=rtpmap:105 G7221/16000
a=fmtp:105 bitrate=24000
a=rtpmap:0 PCMU/8000
a=rtpmap:8 PCMA/8000
a=rtpmap:111 X-ULPFECUC/8000
a=fmtp:111  max_esel=1420;m=8;max_n=32;FEC_ORDER=FEC_SRTP
a=rtpmap:18 G729/8000
a=fmtp:18 annexb=no
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-15
a=trafficclass:conversational.audio.avconf.aq:admitted
m=video 30094 RTP/AVP 126 97 111
b=TIAS:1536000
a=label:11
a=extmap:14/sendrecv http://protocols.cisco.com/timestamp#100us
a=rtpmap:126 H264/90000
a=fmtp:126 profile-level-id=428015;packetization-mode=1;max-mbps=108000;max-fs=3601;max-rcmd-nalu-size=1344;level-asymmetry-allowed=1
a=imageattr:126 recv [x=[32:1:1280],y=[18:1:720],par=1.7778,q=1.00]
a=rtpmap:97 H264/90000
a=fmtp:97 profile-level-id=428015;packetization-mode=0;max-mbps=108000;max-fs=3601;level-asymmetry-allowed=1
a=imageattr:97 recv [x=[32:1:1280],y=[18:1:720],par=1.7778,q=1.00]
a=rtpmap:111 X-ULPFECUC/90000
a=fmtp:111  max_esel=1420;m=8;max_n=32;FEC_ORDER=FEC_SRTP
a=content:main
a=rtcp-fb:* ccm fir
a=rtcp-fb:* ccm tmmbr
a=rtcp-fb:* nack pli
a=trafficclass:conversational.video.avconf.aq:admitted
m=application 32568 RTP/AVP 125
a=rtpmap:125 H224/4800
a=rtcp:32569


2020-07-16 15:04:24.954734 Packet 1808 OUTGOING TCP 192.168.15.25:5060 -> 192.168.15.60:35033
SIP/2.0 100 Trying
Via: SIP/2.0/TCP 192.168.15.60:5060;received=192.168.15.60;branch=z9hG4bK4f66e96085
Call-ID: a14dd180-1eb1e578-4f-3c0fa8c0 at 192.168.15.60
From: "meg" <sip:flan at fn-cucm-pub.fndomain.local>;tag=120~ee8478a2-35a3-4b88-be52-c76b326268fa-21072942
To: <sip:test at test.com>
CSeq: 101 INVITE
Server: SylkServer-5.6.0
Content-Length:  0



2020-07-16 15:04:24.957169 Packet 1809 OUTGOING TCP 192.168.15.25:5060 -> 192.168.15.60:35033
SIP/2.0 180 Ringing
Via: SIP/2.0/TCP 192.168.15.60:5060;received=192.168.15.60;branch=z9hG4bK4f66e96085
Call-ID: a14dd180-1eb1e578-4f-3c0fa8c0 at 192.168.15.60
From: "meg" <sip:flan at fn-cucm-pub.fndomain.local>;tag=120~ee8478a2-35a3-4b88-be52-c76b326268fa-21072942
To: <sip:test at test.com>;tag=abf519e5-7b7b-43f7-b305-cb9affb7ca33
CSeq: 101 INVITE
Server: SylkServer-5.6.0
Contact: <sip:test at 192.168.15.25:5060;transport=tcp>
Allow: SUBSCRIBE, NOTIFY, PRACK, INVITE, ACK, BYE, CANCEL, UPDATE, MESSAGE, REFER
Content-Length:  0



2020-07-16 15:04:25.975890 Packet 1810 OUTGOING TCP 192.168.15.25:5060 -> 192.168.15.60:35033
SIP/2.0 200 OK
Via: SIP/2.0/TCP 192.168.15.60:5060;received=192.168.15.60;branch=z9hG4bK4f66e96085
Call-ID: a14dd180-1eb1e578-4f-3c0fa8c0 at 192.168.15.60
From: "meg" <sip:flan at fn-cucm-pub.fndomain.local>;tag=120~ee8478a2-35a3-4b88-be52-c76b326268fa-21072942
To: <sip:test at test.com>;tag=abf519e5-7b7b-43f7-b305-cb9affb7ca33
CSeq: 101 INVITE
Server: SylkServer-5.6.0
Allow: SUBSCRIBE, NOTIFY, PRACK, INVITE, ACK, BYE, CANCEL, UPDATE, MESSAGE, REFER
Contact: <sip:sylkserver at 192.168.15.25:5060;transport=tcp>
Supported: 100rel, replaces, norefersub, gruu
Content-Type: application/sdp
Content-Length:   627

v=0
o=- 3803900665 3803900666 IN IP4 192.168.15.25
s=SylkServer-5.6.0
t=0 0
m=audio 50008 RTP/AVP 9 101
c=IN IP4 192.168.15.25
a=rtcp:50009
a=rtpmap:9 G722/8000
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-16
a=zrtp-hash:1.10 b9abba66fca404bde50040cce1aea95429f0cbf46b14358cd46e7783f4b12804
a=sendrecv
m=video 50010 RTP/AVP 126
c=IN IP4 192.168.15.25
b=TIAS:256000
a=rtcp:50011
a=zrtp-hash:1.10 d0ac9bded9119980b4d09304bff71ec0b6b5b6747363d6dc0d30b6c629313925
a=sendrecv
a=rtpmap:126 H264/90000
a=fmtp:126 profile-level-id=42801e; packetization-mode=1
m=application 0 RTP/AVP 125
c=IN IP4 192.168.15.25


2020-07-16 15:04:25.988707 Packet 1811 INCOMING TCP 192.168.15.60:35033 -> 192.168.15.25:5060
ACK sip:sylkserver at 192.168.15.25:5060;transport=tcp SIP/2.0
Via: SIP/2.0/TCP 192.168.15.60:5060;branch=z9hG4bK502a05e926
From: "meg" <sip:flan at fn-cucm-pub.fndomain.local>;tag=120~ee8478a2-35a3-4b88-be52-c76b326268fa-21072942
To: <sip:test at test.com>;tag=abf519e5-7b7b-43f7-b305-cb9affb7ca33
Date: Thu, 16 Jul 2020 15:04:24 GMT
Call-ID: a14dd180-1eb1e578-4f-3c0fa8c0 at 192.168.15.60
User-Agent: Cisco-CUCM12.5
Max-Forwards: 70
CSeq: 101 ACK
Allow-Events: presence, kpml
Content-Length: 0



2020-07-16 15:04:26.089299 Packet 1812 OUTGOING TCP 192.168.15.25:5060 -> 192.168.15.60:5060
BYE sip:flan at 192.168.15.60:5060;transport=tcp SIP/2.0
Via: SIP/2.0/TCP 192.168.15.25:5060;rport;branch=z9hG4bKPjabad1cd8-3c1f-476f-ae45-719ebb6604d8;alias
Max-Forwards: 70
From: <sip:test at test.com>;tag=abf519e5-7b7b-43f7-b305-cb9affb7ca33
To: "meg" <sip:flan at fn-cucm-pub.fndomain.local>;tag=120~ee8478a2-35a3-4b88-be52-c76b326268fa-21072942
Call-ID: a14dd180-1eb1e578-4f-3c0fa8c0 at 192.168.15.60
CSeq: 11579 BYE
User-Agent: SylkServer-5.6.0
Content-Length:  0



2020-07-16 15:04:26.089438 Packet 1813 INCOMING TCP 192.168.15.60:35033 -> 192.168.15.25:5060
SIP/2.0 200 OK
Via: SIP/2.0/TCP 192.168.15.25:5060;rport;branch=z9hG4bKPjabad1cd8-3c1f-476f-ae45-719ebb6604d8;alias
From: <sip:test at test.com>;tag=abf519e5-7b7b-43f7-b305-cb9affb7ca33
To: "meg" <sip:flan at fn-cucm-pub.fndomain.local>;tag=120~ee8478a2-35a3-4b88-be52-c76b326268fa-21072942
Date: Thu, 16 Jul 2020 15:04:26 GMT
Call-ID: a14dd180-1eb1e578-4f-3c0fa8c0 at 192.168.15.60
Server: Cisco-CUCM12.5
CSeq: 11579 BYE
Content-Length: 0



^C
carousel at car-sylk:/var/log/sylkserver$


I hope this is enough information for you to give me a hand. Would really like to see this work!

Thanks,
Steve
Have fun Keep smiling!

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