i have a main office and a branch office.
the main office and the branch office connected via vpn connection the branch office is natted to the main office.
so i want to put on the gateway machine a SIP proxy server to nat the sip connection and also to proxy all the connections to SIP uses of the office.
means i have one asterisk machine on the main site and other SIP providers that in a case i want to use i can use them also without connecting to the main office.
i dont need asterisk on the branch office.
the gateway server is ubuntu 10.04 amd64
what i should use Kamailio or the openser on the ubuntu repos?
for now the Kamailio is installed.(not working).
another feature i want to add is to be able to make calls between SIP phones using this server such as berni@mydomain.com
from outside the office and vise verse... to dial people at bob@otherdomain.com
hope for little help
Eliezer