Internet phone gateway system for public telephone network

摘要

The present invention relates to an Internet phone gateway system for a public telephone network, and more particularly, to an internet phone for a public telephone network that provides real-time voice communication by interworking with the Internet by processing a signal transmitted in an analog or digital manner through a public telephone network. It relates to a gateway system.;The conventional Internet phone gateway system for a public telephone network has a problem in that analog or digital interfaces cannot be used because only one connection method can be used.;The present invention provides an extension of the gateway system by dynamically controlling the switching of the network access protocol and the voice codec by easily switching to the public telephone network connection of the analog or digital access method in the Internet phone gateway system for the public telephone network. It is possible to provide an internet phone gateway system for a public telephone network with ease and flexibility.