[SIPForum-discussion] Should session version in "o=" line be same for 180 ringing and 200 ok message?

[Kovács György]

If the SDP has changed the version number in origin line must be
incremented, it is normal behavior. 
Are you sending 200 OK with SDP? Is there any difference between the 180
Ringing SDP and the 200 OK SDP?
Maybe the problem is with the SDP (probably there were different codec
settings?), not the origin line itself.

-- 
Kovács György 

On Wed, 2013-05-15 at 13:08 +0530, siddharth sharma wrote: 

> Hi Guys,
>  
> I have one scenario, where my carrier is complaining that their calls
> are getting disconnected after few milliseconds.
> According to their analysis, they are saying that session version in
> "o=" line  is not same as in 180 ringing and 200 Ok message.
> Because of this, they are sending BYE message.
>  
> Is this valid reason?
>  
> I have checked message, I have not found any difference.
> 
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