So our phone system people are trying to setup a SIP trunk on our Mitel 3300 unit. I open up firewall ports and setup 1:1 NAT for the PBX's IP, everything looks like it should be OK. They are telling ...

The K-1900-712L-IP vandal resistant VoIP SIP panel phone is equipped with a short 12-inch armored handset cable to reduce the risk of users harming themselves, their surroundings, or the phone itself.

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 ...

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 ...

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 ...

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 ...

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, ...

(NASDAQ: EGHT), a leading global business communications platform provider, now offers native support and direct sales for most widely deployed Mitel SIP desk phones. This integration gives ...

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