[Serusers] IP address spoofing

Hi guys. Say you have this setup, with an account for the caller on both Asterisk and SER: Caller -> SER -> Asterisk -> VoIP Provider -> Callee If the caller were to spoof SER's IP address and place a call directly to Asterisk (thus circumventing SER), what would happen? If the call was in fact setup, obviously the caller would not receive any audio from the callee. However, would the call be setup? When Asterisk responds to the caller's request and sends SIP packets back (to SER), would SER say "I don't know anything about this call! Asterisk, kill this call please."? Thanks for your input! -- Nick e: nick.hoffman(a)altcall.com p: +61 7 5591 3588 f: +61 7 5591 6588 If you receive this email by mistake, please notify us and do not make any use of the email. We do not waive any privilege, confidentiality or copyright associated with it.