Voice over IP (VoIP) is a technology that allows you to make and receive phone calls over the internet. Traditionally, phone calls used to take place over the Public Switched Telephone Network (PSTN) using the copper cables. VoIP converts analogue voice into digital data which can then be routed and handled exactly like any other data packet over the internet. Voice calls are routed over the same data network that processes emails, documents, and media files like images and videos.
Businesses can use the office internet connection to connect to the telephone network and can use a softphone application to make calls from different devices that can connect to the internet like IP phones, computers, tablets, mobile phones and many other devices. Unlike landlines, IP phones needs electricity to function which means it will be essential to have a power backup.