A VoIP telephone app is a software application that allows users to make and receive phone calls over the internet. VoIP stands for Voice over Internet Protocol, and it works by converting analog voice signals into digital data that can be transmitted over the internet. This allows users to make phone calls without having to use a traditional landline or mobile phone network.
VoIP telephone apps offer a number of advantages over traditional phone services. They are typically much cheaper, as they do not rely on the PSTN (Public Switched Telephone Network). VoIP apps also offer a number of features that are not available on traditional phone lines, such as call forwarding, voicemail, and video calling. Additionally, VoIP apps can be used on a variety of devices, including smartphones, tablets, and computers.