Roberto Spadim - 2013-01-30

Hi guys, i have a internal asterisk server that i want to allow access to some users at outside of my network (internet)
the asterisk is running nice on ip the problem is how to configure opensips to proxy clients from internet to my asterisk server and answer asterisk rings, users don't need to execute call just answer it
my opensips have a fixed ip and a internet network ip
anyone could help?
thanks guys