Skype is opening its VoIP system so businesses can hook up their internet-based phone systems to the popular service. Session Initiation Protocol (SIP) is an open standard that allows calls to be ...

SIP trunking is a cost-effective option for modernizing legacy phone systems with minimal disruption. Discover the best SIP trunking providers and how to choose one in our complete buyer’s guide. I’ve ...

Appliances from Allworx, Critical Links, Fonality, Microsoft, and Sutus all combine sophisticated features and low cost; they differ in breadth and complexity, with Fonality’s Asterisk-based PBXtra ...

VoIP vendors poised to make news at VoiceCon this week say they will deliver on the multimedia and interoperability promises of Session Initiation Protocol with a lineup of products that use the ...

Here’s where to turn when selecting a VoIP provider. Many of these vendors will be familiar, since most also sell legacy phone systems Most of these vendors offer a mix of TDM-based and VoIP products ...

Despite the rise of texting and messaging, phone communication remains essential. However, as telecom companies shift to digital and cloud technologies like Voice over Internet Protocol (VoIP), there ...

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, ...

Linux-based VoIP box gives a glimpse into vendor’s IP PBX road map. Nortel next month is expected to launch the first in a family of Linux-based IP PBXs that ultimately could save customers money, ...

Voice over IP office phone systems, which integrate phone calls into the networks that carry email and computer files, are no longer the province of geeky early adopters. And there’s a battle shaping ...

How To Set Up Free SIP Calling On Any Device Your email has been sent Most people communicating on the internet are using SIP calling. Here’s how to make free SIP calls — and when you shouldn’t.