[OpenSIPS-Users] Duplicate media description (m=) and codec_* functions in textops

[Bogdan-Andrei Iancu]

Hi Remco,

The double "m" means you have two media streams in your SDP. This should 
not affect the codec related functions.

What exact version/revision of OpenSIPs are you using (OpenSIPS -V) ? 
also could you paste here the plain/text SDP you are fighting against ?

Regards,

Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
http://www.opensips-solutions.com


On 01/21/2013 11:15 AM, Remco . wrote:
> Hi,
>
> Trying to remove T.38 using the following:
>
>          if (is_method("INVITE")&&  codec_exists_re(".*(T38|t38|t.38|T.38).*")) {
>                  xlog("L_WARN", "[$Tf]: A=[$fU] : B=[$rU] :
> Call-id=[$ci] : T.38 found in SDP");
>                  # Test if other codec present, and delete T.38 if so.
>                  if (codec_exists("PCMU") || codec_exists("PCMA")) {
>                          codec_delete_re(".*(T38|t38|t.38|T.38).*");
>                          xlog("L_WARN", "[$Tf]: A=[$fU] : B=[$rU] :
> Call-id=[$ci] : T.38 removed from SDP");
>                  } else {
>                          xlog("L_WARN", "[$Tf]: A=[$fU] : B=[$rU] :
> Call-id=[$ci] : SDP with only T.38");
>                  }
>          }
>
>
> It seems not to match the following SDP:
>
>              Media Description, name and address (m): audio 54106 RTP/AVP 8 0 101
>                  Media Type: audio
>                  Media Port: 54106
>                  Media Protocol: RTP/AVP
>                  Media Format: ITU-T G.711 PCMA
>                  Media Format: ITU-T G.711 PCMU
>                  Media Format: DynamicRTP-Type-101
>              Media Attribute (a): rtpmap:101 TELEPHONE-EVENT/8000
>                  Media Attribute Fieldname: rtpmap
>                  Media Format: 101
>                  MIME Type: TELEPHONE-EVENT
>                  Sample Rate: 8000
>              Media Attribute (a): fmtp:101 0-15
>                  Media Attribute Fieldname: fmtp
>                  Media Format: 101 [TELEPHONE-EVENT]
>                  Media format specific parameters: 0-15
>              Media Attribute (a): ptime:20
>                  Media Attribute Fieldname: ptime
>                  Media Attribute Value: 20
>              Media Description, name and address (m): image 56122 udptl t38
>                  Media Type: image
>                  Media Port: 56122
>                  Media Protocol: udptl
>                  Media Format: t38
>              Media Attribute (a): T38FaxRateManagement:transferredTCF
>                  Media Attribute Fieldname: T38FaxRateManagement
>                  Media Attribute Value: transferredTCF
>              Media Attribute (a): T38FaxudpEC:t38UDPFEC
>                  Media Attribute Fieldname: T38FaxudpEC
>                  Media Attribute Value: t38UDPFEC
>
> Could it be that the double media description (m=) is confusing the
> codec_* functions from the textops module?
> According to the relevant RFC's, it shouldn't but somehow I can't get
> it to work..
>
> Regards,
> Remco.
>
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