Facsimile and static presentation processing – Facsimile – Auxiliary signal
Patent
1997-01-02
1999-11-30
Nguyen, Madeleine
Facsimile and static presentation processing
Facsimile
Auxiliary signal
358436, 358440, H04N 100
Patent
active
059952423
ABSTRACT:
A group-three facsimile machine answers a call by transmitting at least one non-standard tone, before transmitting the standard called terminal identification tone or modulated answer tone. The non-standard tone invites the calling facsimile machine to modify the usual group-three handshaking procedure in such a way that under certain conditions, the procedure can be shortened. Among the many possible modifications are immediate transmission of a password, immediate transmission of training signals if the calling facsimile machine already knows the capabilities of the called facsimile machine, and immediate disconnection if the non-standard tone indicates that the called facsimile machine lacks a necessary capability.
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Endo Hiroshi
Izumisawa Hideo
Nguyen Madeleine
Oki Data Corporation
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