In a communications system having a plurality of endpoints (240,242,246) each including a logical entity and its physical counterpart, a system for controlling and managing session between at least two endpoints. The system including a registration manager (202), an application layer router (204), a session controller (206), a group database manager (208), and at least one group entity (210).

 
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> Methods for affiliating endpoints with a group and determining common communication capabilities for the affiliated endpoints

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