What are gateways, voice gateways, and VOIP gateways?

What is gateway? gateway is also called the inter-network connector and Protocol converter. The gateway is the most complex network interconnection device on the transport layer to achieve network interconnection. It is only used for different network interconnection between two high-level protocols. The structure of the gateway is similar to that of the router. The difference is the Interconnection layer. Gateways can be used for both Wan and LAN interconnection.

What is a VoIP Gateway: A VoIP gateway is a device that connects to and switches protocols between VOIP and the traditional PSTN network.

A VoIP gateway or IP Voice Gateway is a network device that helps convert voice and fax phones, real-time IP networks and public switched telephone networks (PSTN ). It is an IP Voice application designed by a high-performance gateway. Generally, the VoIP gateway is equipped with at least two t1/E1 digital channels. Most VOIP gateways have at least one Ethernet and telephone port. With the help of the Control Gateway, various protocols like MGCP, sip, or long-term enhancement.