3CX PABX and Engin VOIP
I found a great Windows program which runs a PABX (PBX). 3CX offers a free version of the PABX software (as well as a pro version with additional features).
3CX is easy to install and configure through a web browser GUI. Using Linksys IP Phones (SPA941), I have setup 2 ip phones to connect to the PABX - from one phone, I can dial the extension of the second phone and make it ring.
At the moment, 3CX does not connect or register with Engin, so I can place any outgoing calls.



