Patent ID: 7532607

Claim:
An architecture for providing closed user group functionality between a plurality of pre-defined devices utilizing an IP communication network, the architecture comprising an IP backbone for providing communication between pluralities of sub-networks utilizing the IP communication network; a plurality of IP-enabled communication devices, each IP-enabled communication device capable of transmitting/receiving at least one of voice, data and video traffic; and a plurality of intelligent access devices coupled between the IP backbone and the plurality of IP-enabled communication devices, each intelligent access device for storing the identity of each closed user group and the identity of each member of each closed user group periodically pinging all IP-enabled communication devices within its range to collect updated IP address information, wherein each intelligent access device comprises a discovery module for periodically discovering the set of IP-enabled communication devices within its communication range and ascertaining the IP address associated with each discovered device; and a database for storing information identifying each closed user group, the plurality of members of each group, and the constantly-updated IP addresses of each member of each group.