Multiplex communications – Communication over free space – Having a plurality of contiguous regions served by...
Reexamination Certificate
2005-02-22
2005-02-22
Hsu, Alpus H. (Department: 2665)
Multiplex communications
Communication over free space
Having a plurality of contiguous regions served by...
C370S401000, C455S433000, C455S445000, C709S249000
Reexamination Certificate
active
06859448
ABSTRACT:
The H.323 standard is extended to support mobility in a multimedia communication system with services over packet-based networks. Such mobility is supported in a transport independent way. New H.323 messages and/or message elements have been created, and extensions to existing messages provided to accommodate mobility. Messages are provided to facilitate mobility binding as the mobile entity moves from one place to another. The mobile entity periodically registers with different gatekeepers to obtain support for an H.323 communication that includes at least one of audio, video and data.
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AT&T Corp.
Hsu Alpus H.
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