El Friday 25 April 2008 07:04:36 Allan Chao escribió:
In generally, UA send a INVITE message to Poxy server(openser), and build a "early dialog" when receives a 180 ring response from proxy, Now, if UA receives two 180 ringing from Proxy Server that uses parallel foring , that means UA has two early dialogs in itself , is it right ?
Yes, and it's UAC (caller) decission how to handle them. Normally a SIp phone just renders the first 183 received but there is not a rule for that (AFAIK).