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Abstract

A cluster of private wireless communications systems connects to a public wireless communications system via single administrative node. The administrative node includes a shared user database containing information associated with every user of the private systems. The administrative node also includes a shared system and configuration database containing network administration information for each private system in the cluster. The administrative node further includes a switching unit connected between each private system and to the public system. Roaming among the private systems in the cluster is facilitated by storing all user data at a central shared user database, accessed by each private system as necessary. System administration, particularly for shared system parameters, is simplified by a single administrative interface common to all the private systems. The entire cluster of private systems appears as a single connection to the public system, and utilizes only a single point code or other network address.

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First Claim