A VoIP adapter is a device that allows traditional analog telephones and fax machines to connect to a VoIP network. It converts analog voice signals into digital packets that can be transmitted over an IP-based system, enabling legacy devices to function with modern VoIP services.
Businesses and consumers use VoIP adapters to transition from traditional landlines to digital phone services without replacing existing equipment. These adapters typically connect to a router or modem and support features like multiple phone ports, call encryption, and enhanced call quality.