The cord-cutting movement isn’t limited to consumer cable and Netflix. As Voice over Internet Protocol communication matures and as high-speed Internet becomes cheap and ubiquitous, an increasing ...

VoIP phones offer the familiar look of a conventional desk phone with similar functionality, but aren’t as plug-and-go. Like so much networking kit, setting up a VoIP phone can be a very frustrating ...

In our last VoIP installment, we looked at the main reasons why SIP has become a widely adopted protocol, but we left details of the protocol’s inner workings fairly vague. This article will drill ...

Session Initiation Protocol (SIP) will allow true interoperability, eventually enabling every IP-based device and application to communicate seamlessly with one another. This guide discusses some of ...

While most open-source projects are applications and utilities intended for single users, we did something different. We created an infrastructure project: a Voice-over-IP (VoIP) phone system that ...

Since I posted on the subject of passing the CCIE Voice exam, I have had a number of requests to blog some more on some of the individual CCIE Voice exam objectives. So, in response to these requests, ...

Siemens this week is launching a high-end enterprise IP PBX that can host more than 100,000 IP phones from a single data center. Siemens this week is launching a high-end enterprise IP PBX that can ...