Data interface apparatus and method
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United States of America Patent
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Jul 9, 2002
Grant Date -
N/A
app pub date -
Jul 31, 1997
filing date -
Jul 31, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A data interface apparatus (10) provides an interface between an analog communications link (a.sub.2) and a digital communications link (d.sub.2). Analog dialling codes on the analog communications link (a.sub.2) are converted to control codes for controlling a digital communications interface (12) attached to the digital communications link (a.sub.2) for providing access to a digital communications network (16, 18, 20). Access to the digital communications link (a.sub.2) is selectively enabled by the data interface apparatus (10) in response to a password encoded as an analog dialling sequence on the analog communications link (a.sub.2) The data interface apparatus (10) delays call set-up with a modem (6) connected to the analog communications link (a.sub.1,a.sub.2) so as to synchronize completion of call set-up with another call set-up procedure performed on a remote analog link (a.sub.3,a.sub.4) connected to the digital communications network (16, 18, 20).
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