Voice over Internet Protocol (VoIP) services allow users to place telephone calls over the internet rather than through traditional analog or cellular phone networks. VoIP has grown in popularity in ...

Depending on who you talk to these days, the security issues around IP telephony are either likely to bring about Armageddon or are massively over-hyped. One man firmly in the former camp is David ...

New voice over Internet Protocol service doesn't require a software client, which means that users can get started making calls with just a click of their mouse. Marguerite Reardon started as a CNET ...

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The high cost of calling someone across the country or around the world on a landline or mobile phone has spurred many consumers to turn to VoIP as an affordable alternative. Instead of channeling ...

Welcome to the 2014 edition of the Ultimate Google Voice How-To Guide, presented by ZDNet's DIY-IT blog. In this article, and the baker's dozen that accompany it, you'll learn just about everything ...

With Skype under Microsoft ownership, Rebtel now claims to be the largest independent mobile VoIP provider, with 17 million users in over 200 countries accessing its service over WiFi and 3G on iPhone ...

Gibbs looks at magicJack, a good, cheap VoIP service, but support is lacking. Last week I started to enumerate my phone numbers and I wound up discussing Google’s GrandCentral telephony service with ...

Fring may not be much of a household name yet, but the mobile-communications client is certainly making a reputation for itself. Following a public falling-out with Skype earlier in the year, the ...

We don't need it often, but when we do, we really do. We've been fine with Voip.ms for a few years, and not really been burnt by any of the outages they've had. But today's outage after yesterday's ...