Multiplex communications – Pathfinding or routing – Combined circuit switching and packet switching
Reexamination Certificate
2005-08-09
2005-08-09
Maung, Zarni (Department: 2151)
Multiplex communications
Pathfinding or routing
Combined circuit switching and packet switching
C370S395300, C370S401000, C370S465000, C709S241000, C709S241000
Reexamination Certificate
active
06928071
ABSTRACT:
A communication control mechanism installable in the communications controller of an ISDN terminal adapter is operative to conduct in-band communications with its digital terminal device during an internet communication session between the digital terminal device and a digital communication network interface of an internet service provider. The terminal adapter monitors the data link establishment communication exchange between the network access server and the personal computer, to identify and capture internet protocol addresses for the digital terminal device and the network access interface. These addresses are then used by the terminal adapter to communicate in-band with the digital terminal device using user datagram protocol (UDP)-based messages.
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Chang Lin Yow-Chern
Farnsworth Kyle A.
Goodwin C. Brian
Adtran Inc.
Allen Dyer Doppelt Milbrath & Gilchrist, P.A.
Maung Zarni
Nguyen Van
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