Multiplex communications – Pathfinding or routing – Combined circuit switching and packet switching
Reexamination Certificate
2011-05-24
2011-05-24
Nguyen, Brian D (Department: 2472)
Multiplex communications
Pathfinding or routing
Combined circuit switching and packet switching
C370S392000, C709S206000, C709S230000, C379S219000
Reexamination Certificate
active
07948970
ABSTRACT:
A communication terminal device includes a connection establishing unit which establishes a connection by a call control protocol with a destination device designated by an IP telephone number, a communication protocol requesting unit which request a presentation of a plurality of communication protocols which can be supported by the destination device over the connection, a communication protocol selecting unit which selects one communication protocol which the communication terminal device itself can support from the communication protocols presented from the destination device as a response to the request by the communication protocol requesting unit, and a communication unit which communicates with the destination device over the connection by the communication protocol selected by the communication protocol selecting unit.
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Maglo Emmanuel
Murata Kikai Kabushiki Kaisha
Nguyen Brian D
Westerman Hattori Daniels & Adrian LLP
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