Interface for a data telephone and data terminal in a digital te

Details Interface for a data telephone and data terminal in a digital te Interface for a data telephone and data terminal in a digital te

1990-09-10

1994-05-31

Kuntz, Curtis

Telephonic communications

Telephone line or system combined with diverse electrical...

Having transmission of a digital message signal over a...

379 93, 379 96, 379142, 379210, 379211, 3701101, H04M 1100

Patent

active

053176308

ABSTRACT:
A data terminal interface for a terminal adapter and an attached computer provides complete flexibility and control of information in a communication environment for a user. Communications between the terminal adapter and a digital network may be provided in existing digital systems, such as either the Digital Communications Protocol or Integrated Services Digital Network system, for example. The data terminal interface facilitates the exchange of information between the terminal adapter and the computer via an asynchronous data module in the terminal adapter. Through the data terminal interface, the computer is able to directly control user interface circuitry in the terminal adapter by responding to and sending unlimited information to this interface circuitry since conformance to a digital protocol is not required for message traffic between these two units. Also the data terminal interface permits all functions that a user is able to perform at the terminal adapter, such as going off-hook, pressing a button, etc., to be performed by the computer and provided to the network. Specific applications such as call screening, custom alerting and automatic call distribution are easily achieved through use of the data terminal interface.

REFERENCES:
patent: 4812839 (1989-03-01), Okada et al.
patent: 4893336 (1990-01-01), Wuthnow
patent: 5023868 (1991-06-01), Davidson et al.
patent: 5029196 (1991-07-01), Morganstein
patent: 5062103 (1991-10-01), Davidson et al.
patent: 5065425 (1991-11-01), Lecomte et al.
PC Magazine, Feb. 13, 1990, "Building Network Solutions: Is ISDN Tomorrow's Interoffice Network?", pp. 229-254.

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