VoIP phone systems supplanted traditional PBX ... and integrations with other apps. Many VoIP systems offer softphone apps that run on Android and iOS devices, and in some cases, these apps ...

Most people communicating on the internet are using SIP calling. Here’s how to make free SIP calls — and when you shouldn’t.

Why settle for an ancient, analog PBX? The best voice over IP (VoIP) services we've tested deliver enterprise-grade phone system features for a small-business-friendly price.