A VoIP gateway is a device that connects traditional telephone networks to internet-based communication systems. It converts voice signals from analog phones into digital data packets, allowing voice calls to be transmitted over the internet. This technology enables users to make phone calls using Voice over Internet Protocol (VoIP) services, which can be more cost-effective than traditional phone lines. In addition to facilitating calls, a VoIP gateway can also manage various communication protocols and provide features like call routing and voicemail. By bridging the gap between different communication systems, it enhances flexibility and efficiency in both personal and business settings.