A friend of mine who is working in US told me that his company saves a lot of long distance phone calls by using VoIP. When asked about it, he told me that his company subscribes it from Xpander Communications.
Xpander specializes in VoIP phone systems. Xpander delivers the most user friendly phone systems available which focuses on simplicity, reduced costs, and drastically reduced maintenance. It really benefits small businesses with office branches scattered across the country because they can share the same phone system on the same private list of extensions across all branch offices equally thus saving cost.