GATEWAY ROUTER AND PRIORITY CONTROL FOR EMERGENCY CALL IN IP TELEPHONY SYSTEM

摘要

A gateway router in an IP telephony system includes a determination section which determines whether or not an arriving session control signal is of an emergency call, and a controller which dynamically assigns to emergency calls and other general calls a predetermined number of sessions that can be simultaneously connected and thereby performs control such that connection processing is carried out preferentially for a session control signal of an emergency call.