A PRI Gateway is a telecommunications device that connects traditional PSTN (Public Switched Telephone Network) lines with modern VoIP (Voice over IP) networks. It enables businesses to handle large volumes of simultaneous calls by providing multiple channels—typically up to 30—on a single line, making it ideal for enterprises, call centers, and telecom providers. By converting digital voice data from PRI lines into IP format, a PRI Gateway allows seamless integration with SIP-based systems, reducing communication costs, improving call quality, and enhancing network efficiency.