Patent ID: 7209472
Filing Date: 2007-04-24
Classification: H04L,H04M,H04Q

Abstract:
1. A method of controlling change-over of a connection route between media gateway apparatuses, based on a sound/data integrated network that connects subscriber lines accommodated in a telephone network to an Internet protocol communication network via media gateway apparatuses, and that connects a media gateway apparatus at a call originating subscriber's line side to a media gateway apparatus at a call terminating subscriber's line side via the Internet protocol communication network, the change-over control method comprising: a step at which the media gateway apparatuses collect/edit real-time packet quality information of Internet protocol packets for each call, and transmit the packet quality information for each call to a call agent apparatus; a step at which the call agent apparatus receives packet quality information for each call transmitted from the media gateway apparatuses, updates packet quality information for each connection route based on the received packet quality information, and decides on a quality level of the call; a step at which the call agent apparatus selects a connection route of good quality based on the packet quality information for each route when a decision has been made that the quality level has been deteriorated, and transmits an instruction for changing over the call connection route of the deteriorated quality level to the connection route of good quality, to the media gateway apparatuses; and a step at which the media gateway apparatuses change over the connection route according to the route change-over instruction received from the call agent apparatus, while maintaining a call connection set up between the call originating subscriber and the call terminating subscriber.