Technique for configuring network interface circuit in integrated services digital network keyphone system
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United States of America Patent
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Jul 30, 2002
Grant Date -
Jul 4, 2002
app pub date -
Mar 2, 1998
filing date -
Feb 28, 1997
priority date (Note) -
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status (Latency Note)
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Abstract
A technique for configuring a network interface circuit, capable of being commonly used in all countries or networks which have different ISDN protocols, with only one BRI trunk includes the steps of: first storing beforehand in a read only memory (ROM) of the network interface circuit all function programs for supporting an integrated services digital network protocol for each country and network which will be used by the keyphone system, selecting a function program from among the function programs stored in the ROM corresponding the country and kind of network to be operated upon initialization, and setting the selected program, as the function program to be executed.
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