topic Re: Empty video port in SDP request in Call Control https://community.cisco.com/t5/call-control/empty-video-port-in-sdp-request/m-p/3565379#M1956 <HTML><HEAD></HEAD><BODY><P>Could be a call to a device without video or some sort of announcement.</P></BODY></HTML> Fri, 10 Mar 2017 19:24:47 GMT Mark Stover 2017-03-10T19:24:47Z Empty video port in SDP request https://community.cisco.com/t5/call-control/empty-video-port-in-sdp-request/m-p/3565378#M1955 <HTML><HEAD></HEAD><BODY><P>Hello,</P><P></P><P>I'm currently working on a cisco devnet sandbox environment, which has a CUCM 9.1 and a Jabber guest server.</P><P></P><P>My goal is to connect a softphone i developped to this environment and receive video calls from jabber web pages.</P><P></P><P>The jabber page and the softphone are both running on my computer.</P><P></P><P>The SIP call flow is all done and works fine, but i get a void video port from the ACK request of the CUCM once the INVITE has been accepter.</P><P></P><P>This is the SDP packet which is in the OK response i send to CUCM after the INVITE from the jabber guest (replaced ips with {comments}) : </P><P></P><P>v=0</P><P>o=1120 181025627 181025627 IN IP4&nbsp; {sofpthone computer ip}</P><P>s=operator1</P><P>p=1120</P><P>c=IN IP4&nbsp; <SPAN style="font-size: 13.3333px;">{sofpthone computer ip}</SPAN></P><P>t=0 0</P><P>m=audio 35500 RTP/AVP 0</P><P>a=rtpmap:0 PCMU/8000</P><P>m=video 35505 RTP/AVP 96</P><P>a=rtpmap:96 H264/90000</P><P></P><P>And this is the SDP packet from the ACK request (r<SPAN style="font-size: 13.3333px;">eplaced ips with {comments})</SPAN>: </P><P></P><P>v=0</P><P>o=CiscoSystemsCCM-SIP 85475 1 IN IP4 {CUCM ip}</P><P>s=SIP Call</P><P>c=IN IP4 {jabber guest ip}</P><P>b=TIAS:64000</P><P>b=AS:64</P><P>t=0 0</P><P>m=audio 17134 RTP/AVP 0</P><P>b=TIAS:64000</P><P>a=rtpmap:0 PCMU/8000</P><P>a=ptime:20</P><P>m=video 0 RTP/AVP 31 34 96 97</P><P>a=rtpmap:31 H261/90000</P><P>a=rtpmap:34 H263/90000</P><P>a=rtpmap:96 H263-1998/90000</P><P>a=rtpmap:97 H264/90000</P><P>a=content:main</P><P>a=inactive</P><P></P><P>As you can see, the video port has a value of zero, which obviously cannot be used to stream. What could be the cause of this ?</P></BODY></HTML> Fri, 10 Feb 2017 12:44:59 GMT https://community.cisco.com/t5/call-control/empty-video-port-in-sdp-request/m-p/3565378#M1955 e.steuer 2017-02-10T12:44:59Z Re: Empty video port in SDP request https://community.cisco.com/t5/call-control/empty-video-port-in-sdp-request/m-p/3565379#M1956 <HTML><HEAD></HEAD><BODY><P>Could be a call to a device without video or some sort of announcement.</P></BODY></HTML> Fri, 10 Mar 2017 19:24:47 GMT https://community.cisco.com/t5/call-control/empty-video-port-in-sdp-request/m-p/3565379#M1956 Mark Stover 2017-03-10T19:24:47Z Re: Empty video port in SDP request https://community.cisco.com/t5/call-control/empty-video-port-in-sdp-request/m-p/3565380#M1957 <HTML><HEAD></HEAD><BODY><P>Well, the device running the jabber guest page is the same computer that runs the softphone, so it does have a video peripheral (a webcam).</P><P></P><P>That said, it is used by both the softphone and the jabber guest page, could that be the problem ?</P></BODY></HTML> Mon, 27 Mar 2017 06:53:03 GMT https://community.cisco.com/t5/call-control/empty-video-port-in-sdp-request/m-p/3565380#M1957 e.steuer 2017-03-27T06:53:03Z Re: Empty video port in SDP request https://community.cisco.com/t5/call-control/empty-video-port-in-sdp-request/m-p/3565381#M1958 <HTML><HEAD></HEAD><BODY><P>That could definitely be the problem. The camera is probably only attached to one of the running applications.</P></BODY></HTML> Wed, 29 Mar 2017 13:54:34 GMT https://community.cisco.com/t5/call-control/empty-video-port-in-sdp-request/m-p/3565381#M1958 Mark Stover 2017-03-29T13:54:34Z