Multiplex communications – Communication over free space – Combining or distributing information via time channels
Reexamination Certificate
2011-04-05
2011-04-05
Vu, Huy D (Department: 2461)
Multiplex communications
Communication over free space
Combining or distributing information via time channels
C370S352000, C370S356000, C370S389000, C370S401000, C713S150000
Reexamination Certificate
active
07920542
ABSTRACT:
The present invention provides for improved security in a VoIP architecture. In accordance with an embodiment of the invention, a system for providing VoIP service to a user domain having user accessible equipment includes a first domain having VoIP service provider equipment and a second domain having at least one border element communicating with the service provider equipment and the user accessible equipment to enable communications between the service provider equipment and the user accessible equipment. The user accessible equipment is prevented from directly communicating with the service provider equipment.
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Brar Harbir S.
Chong Koan S.
Kealy Kevin B.
Marshall William T.
Rosencrantz Israel
AT&T Intellectual Property II L.P.
Renner Brandon
Vu Huy D
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