Importance

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Abstract

An L2 integrated access (L2IA) system is constructed from: L2IA subscribers for supporting communications between user terminals using various communication media, each L2IA subscriber having an L2IA identifier for uniquely identifying each L2IA subscriber within the L2 integrated access system and a terminal ID for uniquely identifying each L2IA subscriber within each communication medium associated with each L2IA subscriber; and an L2IA relay network formed by relay units to be connected with the L2IA subscribers through various communication media and relaying communications between the L2IA subscribers through the L2IA relay network, each relay unit being provided in correspondence to one communication medium such that at least one relay unit is provided in correspondence to each communication medium, and each relay unit having an L2IA relay ID for uniquely identifying each relay unit within the L2IA relay network and a terminal ID for uniquely identifying each relay unit within each communication medium associated with each relay unit, and an LPR (Location and Preference Register) for registering an RLD (Registered Location Data) indicating a terminal ID of an L2IA subscriber and an L2IA relay ID of a relay unit for each potentially available communication medium in correspondence to the L2IA identifier of each L2IA subscriber, such that the relay unit relays the communications between the L2IA subscribers according to the RLDs registered in correspondence to the L2IA identifies of the L2IA subscribers.

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First Claim