[SIPForum-discussion] Finall what codec they are using..

[Varadhan M]

Hello Vijay,

Codecs are defined in the SDP of Invite and response 200 OK.
Codec may, may not have 2 legs. If 2 legs it requires transcoding between
the codec.

Regards,
Varadhan M


On Fri, Dec 7, 2012 at 11:21 AM, vijay kant gupta <
vijaykant.it2002 at gmail.com> wrote:

>
> Hi Can any body suggest Finally Call setp with which Common SDP. .
> Or it need correction.. last 200 Ok should contain Sdp3.
>
>
>              A              Controller               B
>              |(1) INVITE bh sdp1 |                   |
>              |<------------------|                   |
>              |(2) 200 sdp2       |                   |
>              |------------------>|                   |
>              |                   |(3) INVITE sdp2    |
>              |                   |------------------>|
>              |(4) ACK            |                   |
>              |<------------------|                   |
>              |                   |(5) 200 OK sdp3    |
>              |                   |<------------------|
>              |                   |(6) ACK            |
>              |                   |------------------>|
>              |(7) INVITE sdp3    |                   |
>              |<------------------|                   |
>              |(8) 200 OK sdp2    |                   |
>              |------------------>|                   |
>              |(9) ACK            |                   |
>              |<------------------|                   |
>              |(10) RTP           |                   |
>              |.......................................|
>
>
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