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, ...

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 ...

"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 ...

We are looking at replacing our phone system. We have Nitsuko phone switch using an analog T1 (no PRI) and we are running out of ports on the line cards. This phone system is 18 years old. We have ...

Voice over Internet Protocol (VoIP) technology has been key in allowing individuals and organizations to make and manage audio and video calls using the Internet. Call center companies, businesses, ...

There are those who remain leery of IP telephony. Nothing you say will convince them that today's IP-PBX systems are as reliable as the good old TDM systems they love. Then there are those of us who ...

Will this be the year open-source PBX and VoIP systems are ready for their close-up? The opportunity is better than ever, argued attendees at January's Digium Asterisk World conference in Miami.