Why settle for an ancient, analog PBX? The best voice over IP (VoIP) services we've tested deliver enterprise-grade phone system features for a small-business-friendly price.

Inter-Tel later this month is expected to announce a Linux-based IP PBX with multimedia support, presence and other advanced communications features that could help users perform their jobs more ...

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 ...

Borrowing technology from its carrier softswitches, Siemens has developed an enterprise network-level IP PBX it says companies can use to consolidate telephony setups based on distributed regional and ...

This Comparison Guide features the leading PBX systems from established vendors like Siemens, Cisco, Avaya and Nortel as well as cutting edge systems from new vendors like Shoretel and Fonality. The ...