What Is a VoIP Gateway & How Does It Work?

A VoIP gateway is a hardware device that converts telephony traffic into packets of data for transmission over the internet, bridging the analog, cellular, and IP network. Depending on where the voice signal originates from, the gateway will convert the voice signal into the proper form for receipt by the destination network.

PSTN

If the voice signal originates from the PSTN, a VoIP gateway can convert the analog signal into packets of data and sends it to the IP-based phone system, and vice versa.

DIGITAL LANDLINES

If the voice signal originates from digital landlines, a VoIP gateway can also convert the digital signal into packets of data and allows the two networks to communicate.