GNU Gatekeeper

GNU Gatekeeper is open-source software that manages and controls the flow of voice calls over internet networks, particularly for Voice over IP (VoIP) systems. It functions as a central point that handles call signaling, connecting callers, verifying identities, and ensuring calls are routed correctly. By doing so, it helps organizations efficiently manage their telephony services, providing secure and reliable communication without traditional phone lines. Essentially, it acts as a digital gatekeeper that oversees and facilitates internet-based voice communications, making phone calls over the internet possible and manageable for businesses and service providers.