[asterisk-users] Session Refresh or Codec change

Wed Dec 23 02:20:44 CST 2009

23 dec 2009 kl. 06.17 skrev Prashantm at digilink.in:

> 
> Hi, 
> 
> How asterisk distinguish whether the re-invite is for codec change or for a session refresh? I know that it checks the session version and decides the same. But even if session version is different from the initial invite and but it has the same codec, asterisk identifies that it is a session refresh and does not pass this INVITE to the other end. 
Asterisk NEVER passes any SIP message to the other end. Asterisk is a b2bua, not a proxy.

THe decision to send an re-INVITE on the second call leg is made separate from whatever happens with the SIP dialog on the first call leg.

/O