Will this work for us?

We are looking for a complete VOIP system. We have about 15 locations all connected via T1. We would like a system so that if I were to make a call to an area where it would be local to automatically just send the call over the network and out the local pbx so there would be no long distance call. Also is there any documents that compare this open source system to other VOIP systems from other companies?

Thanks
Nick

Sure you can. You can read “the book” on Asterisk. You can get it at: h6315.com/ast_docs/Asterisk%20TFOT%20v2.pdf