The Very First Facebook PBX App
So you need a PBX right on your FB account, so here it is.
It was launched in 2010, and there was no similar app on Facebook for this purpose.
This app is a FB version of VisionVoIP and automatically sets up users’s PBX as they install it in their profile.
However, my experience has been that giving such a wonderful thing on Facebook was a waste of time. People come on Facebook not to work, but to entertain, and a PBX management system is by no means an entertainment thing. So despite of getting over a 100 users, this app really didn’t pick up.