Asterisk to Asterisk to local PSTN - Want to find out more

Hi,

I was wondering if somebody could point me in the right direction as a solution to the following. I’m not looking for a complete answer (although that would be nice!) I would just like to pointed in the right direction so I can find the answers e.g. what keywords do I need to search for?

My company has three offices, London, Chicago and Singapore with approximately 20 people in each office. We are looking for a solution that would allow us to make local calls in any of these countries from any of our offices.

E.g. I call a Singapore number from London, my local Asterisk box recognises that it is a Singapore number and transfers my call to the Asterisk box in the Singapore office. The Singapore Asterisk box then dials out to the local PSTN?

I bet there’s some kind of acronym or search term I could use to find a whole load of info on this, unfortunately I don’t seem to be able to find it!

thank you in advance,
Paul.

Hi

Its simple realy, Just standard voice networking.

First link all sites with sip or IAX connections.

then construct a dialplan that for example whenyou dial
9001XXXXXXX it routes the call to the US system and breaks the call out there.

You just have to be careful with security

Ian