Making voice and video calls over the internet should be easy, but it’s not always the case. Some networks block Voice over Internet Protocol (VoIP) apps, while others leave your call data exposed. Using a virtual private network (VPN) with VoIP adds a layer of privacy and helps ensure stable, reliable communication, whether you're managing a hybrid team or just making a quick call from public Wi-Fi.
Why do VoIP calls get blocked or throttled?
VoIP apps send your voice and video data through the internet, but not all networks treat that data equally.

With more teams working remotely, modern phone systems are evolving fast. Discover how Zoom Phone compares to traditional Voice over Internet Protocol (VoIP), and learn which one is right for your company’s needs, budget, and tech comfort level.
What’s the difference?
Traditional VoIP systems have been around for a while, enabling phone calls over the internet instead of using traditional phone lines.