[SR-Users] Remove m=video from SDP header

[Andrew Pogrebennyk]

You might need to upgrade to 3.3.1 to use sdpops module:
http://kamailio.org/docs/modules/stable/modules/sdpops.html

On 08/13/2012 09:52 AM, phillman25 wrote:
> Dear List
> 
> I am trying to remove specific lines from the following original SDP body:
> 
> 
> Content-Type: application/sdp
> Content-Length: 406
> 
> v=0
> o=root 3048 3048 IN IP4 xxx.xxx.xxx.xxx
> s=session
> c=IN IP4 xxx.xxx.xxx.xxx
> b=CT:384
> t=0 0
> m=audio 11904 RTP/AVP 0 8 18 101
> a=rtpmap:0 PCMU/8000
> a=rtpmap:8 PCMA/8000
> a=rtpmap:18 G729/8000
> a=fmtp:18 annexb=no
> a=rtpmap:101 telephone-event/8000
> a=fmtp:101 0-16
> a=silenceSupp:off - - - -
> a=ptime:20
> a=sendrecv
> m=video 11602 RTP/AVP 34 99
> a=rtpmap:34 H263/90000
> a=rtpmap:99 H264/90000
> a=sendrecv
> 
> 
> 
> 
> I need to remove the following lines from the above SDP body as my
> International carrier does not support Video capabilities:
> 
> m=video 15042 RTP/AVP 34 99
> a=rtpmap:34 H263/90000
> a=rtpmap:99 H264/90000
> 
> 
> 
> 
> I used the following code in Kamailio config:
> 
> if(has_body("application/sdp") && search_body("m=video")){
> 
>                    subst_body('#m=video ([0-9]+) RTP/AVP (.*)$# #');
> 
>                    subst_body('#a=rtpmap:34 (.*)$# #');
> 
>                    subst_body('#a=rtpmap:99 (.*)$# #');
> 
>                    subst_body('#a=sendrecv(.*)$# #');
> 
>         }           
> 
> 
> 
> 
> Content-Type: application/sdp
> Content-Length: 325
> P-hint: outbound
> v=0
> o=root 3048 3048 IN IP4 xxx.xxx.xxx.xxx
> s=session
> c=IN IP4 xxx.xxx.xxx.xxx
> b=CT:384
> t=0 0
> m=audio 11904 RTP/AVP 0 8 18 101
> a=rtpmap:0 PCMU/8000
> a=rtpmap:8 PCMA/8000
> a=rtpmap:18 G729/8000
> a=fmtp:18 annexb=no
> a=rtpmap:101 telephone-event/8000
> a=fmtp:101 0-16
> a=silenceSupp:off - - - -
> a=ptime:20
> a=sendrecv
> 
> 
> As you can see the m=video body has been removed, however, calls are
> still failing. Is there something i have missed?
> 
> I am using Kamailio v3.2.2
> 
> 
> Thanking you in advance!
> 
> Phillip
> 
> 
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