Multiplex communications – Pathfinding or routing – Combined circuit switching and packet switching
Reexamination Certificate
2005-12-06
2008-12-09
Ni, Suhan (Department: 2614)
Multiplex communications
Pathfinding or routing
Combined circuit switching and packet switching
C370S355000
Reexamination Certificate
active
07463624
ABSTRACT:
A main equipment is used in a network telephone system including telephone terminals and the main equipment. The telephone terminals are connected to a communication network to transmit voice packets. The main equipment connects the telephone terminals to one another through the communication network to cause the telephone terminals to communicate with each other. The main equipment includes a communication unit and a detection unit. The communication unit transmits connection confirmation signals to the telephone terminals at different timings, respectively. The connection confirmation signals are defined by a communication protocol on the communication network. The connection confirmation signals are used to confirm connection between the telephone terminals and the main equipment. The detection unit detects presence of one telephone terminal when the one telephone terminal sends back a response signal in response to the transmission of the connection confirmation signals.
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Office Action in related foreign application, GB0524210.2 (2 pages), Nov. 8, 2006.
ORCA SCC Softswitch User's Guide, May 2003, pp. 1-62.
ORCA SCC Softswitch User's Guide, Release 8.2, Nuera Communications, Inc., May 2003, pp. 1-62.
Chinese Office Action with English translation, dtd Jun. 6, 2008, in corresponding foreign application, 13 pp.
Kabushiki Kaisha Toshiba
Ni Suhan
Pillsbury Winthrop Shaw & Pittman LLP
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