[SIPForum-discussion] SDP Message in SIP problem. Please Help.

[Venkata Ramesh B]

Hi Kristine,

The SDP has a problem that the rtpmap line is missing for payload 101 and it
is mandatory. Since you say that the INVITE is accepted by the server, it is
hard to say if that is the real problem. Do you have the full wireshark
trace ?

Best Regards,
Ramesh.

On Sat, Jul 25, 2009 at 9:38 AM, Kristine Regis <kristine at racequeen.ph>wrote:

> Hi, I hope anyone could help me figure out what's the problem here.
>
> I am currently developing a SIP Call. The flow of the call from INVITE
> to BYE is correct, as I assume since the server accepted it - the server
> is OpenSIPs. My SDP is as follows:
>
> v=0
> o=root 3457409648 3457409648 IN IP4 172.16.100.21
> s=-
> c=IN IP4 172.16.100.21
> t=0 0
> m=audio 5060 RTP/AVP 0 8 101
> a=rtpmap:0 PCMU/8000
> a=rtpmap:8 PCMA/8000
>
>
> I have this SDP and the voice streaming cannot be done. The caller and
> the call cannot here each other. I don't know what is the problem here
> or if the SDP above is wrong.
>
> I hope you could help me solve this problem. Thank you.
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