[Freeswitch-users] rtpmap question PCMU/PCMA

[Mark Campbell-Smith]

Hi David,

Its an INVITE.  Full invite below:

   INVITE sip:gw+Phonzo at 124.xxx.xxx.xx:5080;transport=udp;gw=Phonzo SIP/2.0
   Record-Route: <sip:80.232.37.178;ftag=262787ae2a9104a0c7700794a69028aco;lr>
   Via: SIP/2.0/UDP
80.232.37.178;branch=z9hG4bK8a48.ecc54191b911cf6bfd73daeefeae0ada.0
   Via: SIP/2.0/UDP
80.232.37.178:5061;branch=z9hG4bK443b032c2a924807acf39718946e2c9e;rport=5061
   Max-Forwards: 16
   From: 010711xxxx
<sip:711xxxx at 80.232.37.178>;tag=262787ae2a9104a0c7700794a69028aco
   To: <sip:4610xxxxxxx at 80.232.37.178>
   Call-ID: M2Q1NjhhNmZjOGJjMDc3ODhlNzUyYzRiM2ZkMjQyZTE.
   CSeq: 200 INVITE
   Contact: Anonymous <sip:80.232.37.178:5061>
   Expires: 300
   User-Agent: Sippy
   cisco-GUID: 1658214937-1822691807-2631794736-96895450
   h323-conf-id: 1658214937-1822691807-2631794736-96895450
   Content-disposition: session
   Content-Length: 364
   Content-Type: application/sdp

   v=0
   o=Sippy 141730476 0 IN IP4 80.232.37.178
   s=-
   t=0 0
   m=audio 47676 RTP/AVP 8 0 18 101
   c=IN IP4 213.50.91.3
   a=fmtp:18 annexb=yes
   a=rtpmap:101 telephone-event/8000
   a=fmtp:101 0-15
   a=sqn: 0
   a=cdsc: 1 audio RTP/AVP  8
   a=cdsc: 2 image udptl t38
   a=cpar: a=T38FaxUdpEC:t38UDPRedundancy
   a=cpar: a=T38FaxVersion:0
   a=cpar: a=T38MaxBitRate:14400
   a=sendrecv

Regards
Mark

On Mon, May 31, 2010 at 4:29 PM, David Ponzone <david.ponzone at gmail.com> wrote:
> Mark,
> This looks like a T38 Re-INVITE, but a weird one.
> David Ponzone  Direction Technique
> email: david.ponzone at ipeva.fr
> tel:      01 74 03 18 97
> gsm:   06 66 98 76 34
> Service Client IPeva
> tel:      0811 46 26 26
> www.ipeva.fr  -   www.ipeva-studio.com
> Ce message et toutes les pièces jointes sont confidentiels et établis à
> l'intention exclusive de ses destinataires. Toute utilisation ou diffusion
> non autorisée est interdite. Tout message électronique est susceptible
> d'altération. IPeva décline toute responsabilité au titre de ce message s'il
> a été altéré, déformé ou falsifié. Si vous n'êtes pas destinataire de ce
> message, merci de le détruire immédiatement et d'avertir l'expéditeur.
>
>
>
> Le 31/05/2010 à 16:12, Mark Campbell-Smith a écrit :
>
> Hi All,
>
> I'm sure I've discussed this before, but I searched through my gmail
> and google and couldn't find the answer.
>
> Below is the SDP parameters from my sip provider.  Is it mandatory to
> always include the rtpmap details for PCMU/PCMA codes?  For example
> something like 'a=rtpmap:8 PCMA/8000' and 'a=rtpmap:0 PCMU/8000'?
>
> I'm using sipdroid on android and it rejects this with 'codec not supported'
>
> Thanks
>
>
>
> o=Sippy 141730476 0 IN IP4 xxx.xxx.xxx.xxx
> s=-
> t=0 0
> m=audio 47676 RTP/AVP 8 0 18 101
> c=IN IP4 xxx.xxx.xxx.xxx
> a=fmtp:18 annexb=yes
> a=rtpmap:101 telephone-event/8000
> a=fmtp:101 0-15
> a=sqn: 0
> a=cdsc: 1 audio RTP/AVP  8
> a=cdsc: 2 image udptl t38
> a=cpar: a=T38FaxUdpEC:t38UDPRedundancy
> a=cpar: a=T38FaxVersion:0
> a=cpar: a=T38MaxBitRate:14400
> ]
>
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