Reservation proxy function supporting filtering of multicast...

Details Reservation proxy function supporting filtering of multicast... Reservation proxy function supporting filtering of multicast...

2006-10-10

2006-10-10

Shah, Chirag G. (Department: 2616)

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

C370S432000, C370S468000, C709S226000

Reexamination Certificate

active

07120147

ABSTRACT:
Call control methods are disclosed for a multi-zone, packet-based communication system using zone controller/RPEs incorporating a reservation proxy function. Participating zone controller/RPEs (124–130) receive and join a multicast group address to be used for a call, and exchange RSVP signaling messages across one or more inter-zone, packet network links (148, 150, 152, 154) to reserve communication resources for the call on behalf of participating devices in various zones. In the preferred embodiment, the zone controllers use IGMPv3 messages to specify other participating zone controllers as valid senders, thereby receiving desired control information for the duration of the call without being encumbered by undesired payload information.

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