TRUNK GATEWAY DISASTER TOLERANCE NO OFF-LINE REALIZING METHOD, SYSTEM AND MEDIA GATEWAY

摘要

A trunk gateway disaster tolerance no off-line realizing method, system and media gateway is provided. The method involves: after detecting a first link off-line between it and a linked first soft switch device by a first media gateway, protecting the call path of its existed trunk gateway user and sending a transfer prohibited message to a terminal linked with it, routing a new initiated call by the terminal to a second media gateway linked to the terminal after receiving the transfer prohibited message.