[asterisk-users] PJSIP reInvite

Joshua C. Colp jcolp at digium.com
Fri Aug 16 04:26:56 CDT 2019

On Fri, Aug 16, 2019, at 3:06 AM, J├Âran Vinzens wrote:
> Hi all,
> So the scenario is:
> A -> Asterisk -> B
> after B send back 200 OK Asterisk is answering the call to A. Directly 
> after the Answer Asterisk generates a ReInvite to A and the only 
> difference between the 200 OK sdp and the reInvite sdp are the offered 
> codecs which are forwarded from B to A. Here i do not understand why 
> this could not be done in the 200OK to A?

Noone has written the functionality to do this. The information isn't exchanged back at such a point or used to construct the answer to A.
> As far as i understood you Josh, there is no way to prohibit this kind 
> of reInvite? It is not about route Optimization just for some more 
> options for the A Party.

There's no ability currently to disable this.

Joshua C. Colp
Digium - A Sangoma Company | Senior Software Developer
445 Jan Davis Drive NW - Huntsville, AL 35806 - US
Check us out at: www.digium.com & www.asterisk.org

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