Re: [Sip] Different SDP Session Version in 183 & 200 OK

[Nitin Kapoor <[e-mail]>]

Hello All,

Could any one please help me out on requested query as below.

Thanks,
Nitin

On Tue, Mar 8, 2011 at 4:48 PM, Nitin Kapoor <[e-mail]> wrote:

> Dear All,
>
> I have one call scenario where my termination is sending the SDP in 183 as
> well as in 200 OK also. As far as i know if we are getting SDP in 183
> session progress then my UAC can ignore the SDP in 200 OK. Also most of the
> time SDP is same.
>
> But here i noticed the slight difference of "Session Version". Here when my
> termination is sending 188 Session Progress with SDP is sending the SDP as
> below.
>
> I can see that  my Termination is incrementing  "*Session Version*" for
> SDP in 183 & 200 OK in same dialog..
>
> *183 with SDP*
>
> S_OWNER : o=TLPMSXP2 22660 *22660* IN IP4 69.90.230.210
> S_NAME : s=sip call
> S_CONNECT : c=IN IP4 69.90.230.217
> TIME : t=0 0
> M_NAME : m=audio 59072 RTP/AVP 18 4 8 98
>
> 200 OK with SDP:
>
> S_OWNER : o=TLPMSXP2 22660 *22661* IN IP4 69.90.230.210
> S_NAME : s=sip call
> S_CONNECT : c=IN IP4 69.90.230.217
> TIME : t=0 0
>
> Could anyone please let me know if that is okay to increment the session
> version and if any supported document is there?
>
> Thanks,
> Nitin
>