Session Initiation Protocol (SIP) is a must for voice over IP (VoIP) communication. But by itself, SIP is insecure and easily hacked. Here's what you need to know to protect your calls and your ...

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 ...

Before getting into the actual SIP and VoIP providers in the market, let's make clear about the purpose and definition of SIP Trunking to replace your traditional business phone lines. Session ...

Viking Electronics has announced the release of the K-1900D-IP and K-1900D W-IP VoIP SIP compliant, classic-style desk and wall mounted hotline phones. “These timeless phones are now available with ...

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 ...

Why you can trust TechRadar We spend hours testing every product or service we review, so you can be sure you're buying the best. Find out more about how we test. Grandstream Networks has been ...

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 ...

Even many IT professionals haven't heard of the Session Initiation Protocol (SIP), so it's almost certain your users haven't. However, unless you're using an entirely proprietary Voice-over-IP (VoIP) ...