Microsoft Technology Licensing, LLC

Ling-Cheung Aaron Lo

Dhigha D Sekaran

David J Simons

Ajay P Chitturi

Robert Osborne

Vishal Chhabilbhai Thakkar

Rakesh Tangirala

Leon Chih Wen Wong

A system and methods for facilitating multiparty communications sessions with a plurality of participants and for dynamically designating a communications session manager. More particularly, a system and methods, including protocols, for: establishing a multiparty communications session between a plurality of participants and their respective communication devices in a full-mesh topology; establishing a dynamically designated session manager uniquely associated with a first participant of the multiparty session and, hence, such participant's communication device; as necessary, adding and removing participants and their respective communication devices from the multiparty communications session; and, designating, or electing, another participant as session manager when the first participant exits the multiparty communications session. The methods also enable participants to maintain consistent lists of session participants and establish peer to peer communication links between the participants.

System and methods for facilitating a multiparty communications session with a dynamically designated session manager

A synchronization system establishes a session between a client end point and a server end point via an intermediary server of a server pool. When messages sent from the client end point to the server end point are received at the server pool and the intermediary server is unavailable, the messages are routed to a new intermediary server. The end points, however, may be unsynchronized as a result of the unavailability. The new intermediary server can detect that it is a new intermediary server for the session and assumes that the server end point and the client end point may be unsynchronized because of the unavailability. The new intermediary server then notifies the client end point that it may need to re-synchronize with the server end point.

Method and system for re-synchronizing end points when an intermediary detects that the end points may be unsynchronized

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Ling-Cheung Aaron Lo