Multiplex communications – Pathfinding or routing – Combined circuit switching and packet switching
Reexamination Certificate
2003-09-30
2009-06-02
Nguyen, Quynh H (Department: 2614)
Multiplex communications
Pathfinding or routing
Combined circuit switching and packet switching
C370S353000, C370S354000, C370S355000, C370S356000
Reexamination Certificate
active
07542460
ABSTRACT:
To facilitate calls made by Internet telephony through a computer, an IP phone system is provided with an audio I/F18for inputting and outputting audio signals for communications to and from a PC20over the Internet200, in accordance with Internet telephony execution commands; a user I/F13for inputting Internet telephony call start instructions; and a path switching portion19for switching the output destination of audio signals that are input though a handset14and the input source of audio signals to be output as sounds from the handset14, between an NCU17and the audio I/F18, if a call start instruction for Internet telephony is input. If a call start instruction for Internet telephony is input from the user I/F13, a control portion11outputs a control command for executing Internet telephony with respect to the PC20, as an audio signal from the audio I/F18.
REFERENCES:
patent: 7023987 (2006-04-01), Prentice
patent: 7061901 (2006-06-01), Shnitzer et al.
patent: A 2001-86209 (2001-03-01), None
patent: A 2001-217929 (2001-08-01), None
patent: A 2001-230879 (2001-08-01), None
Chida Susumu
Kuwabara Kazuhiro
Brother Kogyo Kabushiki Kaisha
Nguyen Quynh H
Oliff & Berridg,e PLC
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