Cisco SIP based phones have SIP extensions that use the SIP protocol for Cisco proprietary operations like registering a Cisco SIP phone by MAC Address. This blog will take a high level look at ...

Skype is diving deeper into the business phone market with a system that lets companies integrate their existing, open VOIP phone systems with Skype’s proprietary VOIP service. The new offering, ...

SIP trunking is a type of protocol used for VoIP, although the relationship between the two has often been confused. In this article, we’ll take a close look at what exactly SIP is, what SIP trunks ...

The most reliable internet protocol (IP) desk phone is Polycom VVX because its hardware is crafted to an extremely high standard, and its user base appears to be consistently satisfied with its ...

The SIP protocol is commonly used for IP telephone communications. Unfortunately it’s notorious for having issues with NAT traversal. Even some major vendors can’t seem to get it right. [Stephen] had ...

An interesting discussion on the Broadband forum of DSLReports.com documents how to reach a Google Voice number via a SIP phone. “this is a direct connection, without going through Gizmo or any other ...

IP audio and control specialist Barix now supports Crestron Rava SIP intercom and phone technology. The Barix SIP firmware will simplify integration of Rava-enabled touch screens with analog devices, ...

But price drops means revenues are up only marginally... Increasing numbers of western European businesses are switching to voice over IP (VoIP) phone services but that doesn't mean IP telephone ...