Answer
Jun 16, 2025 - 07:09 AM
PRI, or Primary Rate Interface, is a telecommunications standard used in the Integrated Services Digital Network (ISDN) for carrying multiple voice and data transmissions between a network and a user. SIP, or Session Initiation Protocol, is a signaling protocol used for initiating, maintaining, and terminating real-time sessions that involve video, voice, messaging, and other communications applications and services over the Internet.
