In this Clear Choice test of four open source-based IP PBX systems, we found products that are well suited for the low end — defined in this testing as supporting as many as 250 concurrent users.

To recommend the best phone systems for small businesses, our team of expert writers and researchers hone in on the most important factors. We rate providers on value for money – including initial ...

The Alescere IP-PBX is a Linux-based business communications system. It's aimed at the Small/Mid-Sized Business market, with strong support for larger companies with many small to mid-sized branch ...

We guess it's only appropriate that, after our last testdrive of the Artisoft TeleVantage platform, we do Vertical next, since Artisoft announced they acquired Vertical last week. Vertical Networks ...