will always send 180 Ringing and after that the 183 Session Progress. Is there any way to configure the system to behave as in version 1.4.21.1? The show stopper for me is the new behaver. I known that - there is no problem to send 180 Ringing before sending the 183 Session Progress and if there is a problem it is in the other device, not in the Asterisk. Also is the new behaver (1.4.2X+) presented in all new versions of Asterisk 1.6+/1.8+? Regards, Anatoliy