Importance

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Abstract

When customer-premises communication equipment connected to a home gateway device is about to establish IP communication with a server on a network, the present invention enables the server to establish communication after verifying that the physical connection location of the communication equipment is authorized. When a DHCP server issues an IP address to the home gateway device, the DHCP server not only passes a circuit-ID-based identifier to the home gateway device, but also transmits the identifier and information about the home gateway device to the server. Upon receipt of the identifier through the home gateway device, a communication equipment requests to establish IP communication with the server by using the identifier and the information about the home gateway device to which the communication equipment is connected. This permits the server to check whether the connection path of the communication equipment that has requested to be connected is proper.

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First Claim