VOIP Phone (IP Phone) in data center room. A PBX (private branch exchange) system allows an organization to manage incoming and outgoing phone calls, as well as internal communication. A PBX is made ...

Nortel Networks Ltd. today is unveiling plans to deliver common operating software for its Succession line of IP private branch exchange (PBX) systems and its older Meridian 1 digital voice switches.

Is VoIP ready for prime time? Look at the raft of ambitious enterprise VoIP projects announced in recent months. A Q&A with Craig Hinkley Not that telecom professionals are entirely abandoning more ...

Starting my career with AT&T, I’ve closely followed the evolution of unified communications (UC) technology—from the early days of digital PBXs to today’s IP-based systems. As a product marketing ...