On 03/08/2011 03:48 PM, Nitin Kapoor 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?

Was the to-tag in the 183 and 200 responses the same or had it changed?

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