Application programming interface for modem and ISDN processing
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United States of America Patent
Stats
-
Feb 12, 2002
Issued Date -
N/A
app pub date -
Nov 29, 1999
filing date -
Jul 25, 1996
priority date (Note) -
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status (Latency Note)
Importance
Abstract
An application programming interface provides for command and data communication between a user, application or driver and a telephone data processing system which provides communication between a host computer and a telephone line. The telephone data processing system is capable of processing ISDN telephone calls as well as voice or analog-originated telephone calls. The application programming interface of the invention includes a host interface, an ISDN interface and a modem interface. The host interface receives commands and data from the user. The modem interface and ISDN interface provide commands and data communication between the host interface and the appropriate telephone call processing based on telephone call type. At the top level, the specific call type processing is transparent to the user. That is, the user need not know the type of telephone call, i.e., modem or ISDN, being processed.
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