Calls to other Asterisks servers via permenant VPN


Consider the following scenario, I have one site (my site) with an Asterisk server and then I have another site (my clients site) they too have an Asterisk server we have a permenant VPN tunnel.

I would like to be able to make a call to one of my clients exentions but without using the ISDN lines etc, as if I were calling an internal number.

Perhaps if I had a dialing code before their extension etc

Any advice or where to start reading would be greatly appreciated.

Hope that made sense!


look in the wiki ( and search for multiple server configurations.