Is it possible to run asterisk on its own server and a2billing on a web server and connect the two some how?

I have a client thats doing a calling card website and need some help with this.
Thanks,
Matt S.

Yes, it's definitely possible to do that - have Asterisk running on one server and the a2billing database/interface on another. The a2billing.conf file on the Asterisk server would point to the remote a2billing database server.

There's a couple more bits to consider (such as SIP/IAX config files if you're using that) you can find info about how to do it over on the a2billing forums - http://forum.asterisk2billing.org/index.php