Dual-purpose videophone for internet and public switched telephone network (PSTN)
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United States of America Patent
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N/A
Issued Date -
Nov 20, 2003
app pub date -
Dec 17, 2002
filing date -
May 17, 2002
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
The present invention relates to a dual-purpose videophone applicable for both Internet and PSTN by handling both IP and PSTN in a single unit. The present invention presents a dual-purpose videophone for Internet and PSTN, characterized by comprising: a first means, equipped with a modem for being connected to PSTN, for carrying out H.324 protocol and V.84/V.80 protocol; a second means, equipped with an ethernet for being connected to Internet, for carrying out H.323 protocol and TCP/IP protocol; and a selection means for selecting one means from the first means and the second means. A dual-purpose videophone of the present invention can handle both IP and PSTN in a single unit, and thereby provide a video-communication capability regardless of the network types and the residence localities, eliminate the economical burden to purchase an extra videophone, and enable an interlocking system construction.
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