Foley & Lardner
Button telephone apparatus and internet communication system
An Internet communication system is disclosed, that comprises a plurality of ISDN (Integrated Services Digital network) lines, an Internet network connected to the ISDN lines using IP (Internet Protocol) as a common protocol, at least one button telephone apparatus connected to the ISDN lines, and at least one telephone unit connected to the button telephone apparatus, wherein the button telephone apparatus has a selecting means for selecting a conventional telephone function or an Internet telephone function, wherein when the selecting means selects the Internet telephone function, the button telephone apparatus converts dial data received from the telephone unit into an IP address, the dial data representing a call destination, converts data of the audio signal received from the telephone unit into IP packets, and transmits the IP packets to the Internet network.
NEC Infrontia Corporation
H H
H04M H04M
inventional inventional
Hideo
Yamashita