"Can Centrex survive or perhaps even thrive in the era of convergence?" Industry observer Jay Brandstadter thinks it can, but maybe not in the form you've known it: "For those considering IP telephony ...

PBX vs VoIP: How to Compare and Choose a Phone System Your email has been sent At first glance, PBX and VoIP seem like two very different types of phone systems. But modern technology, like IP PBX, ...

eWEEK content and product recommendations are editorially independent. We may make money when you click on links to our partners. Learn More. Knowledge of voice over IP has become so ubiquitous that ...