[reSIProcate] INVITE, dialog and tags

[Christian_Gavin at logitech.com]

Yes, I had the feeling that 1xx would establish the dialog (early dialog)
and reSIProcate is correct in using the tag from the BYE.

So, would you say in this case the Cisco gateway is wrong to reject the BYE
?

Regards,
Christian

> Hi
>
> Read rfc3261 more closely.
> First INVITE is not request within dialog.
> Dialog is established when you get first 1XX or 2XX response (except
100).
> So you must use tag from 183 response (in your scenario) to construct any
> requests within dialog - re-INVITES, BYE etc.
>
> Regards,
> Alex