How to Build a Free (or Almost Free) Phone System for Your Business – GigaOm

How to Build a Free (or Almost Free) Phone System for Your Business
GigaOm, CA
Gizmo is a useful add-on to Grand Central, as well as other SIP-based phone systems like Asterisk. It?s essentially a more open version of Skype, and works well with standards-based VoIP phone systems, handsets and services. …