Personal computer--as an interface between a telephone station set and a business communication system

Patent 4748656 Issued on May 31, 1988. Estimated Expiration Date:

March 21, 2006. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

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Inventors

Assignee

American Telephone and Telegraph Company

Application

No. 06/842685 filed on 03/21/1986

US Classes:

379/93.05, Terminal interface circuitry379/93.08, Transmission scheme (e.g., compression/decompression, transmission rate)379/93.14Having switching station

Examiners

Primary: Ng, Jin F.
Assistant: Connors, Matthew E.

Attorney, Agent or Firm

International Classes

H04L 13/00 (20060101)
H04Q 11/04 (20060101)
H04M 1/253 (20060101)
H04M 11/06 (20060101)

Abstract

This invention is an interface arrangement which interconnects a business communication system with a telephone station set. This interface is implemented in a personal computer which serves to control the operation of the associated telephone station set and also provide business communication services. All signaling from the business communication system is received by the personal computer, interpreted, and appropriate control signals are then forwarded under control of the software resident on the personal computer to activate the digital telephone station set. The signals from the digital telephone station set are intercepted by the personal computer, interpreted, modified and appropriate control messages and signaling are then forwarded by the personal computer to the business communication system.This arrangement enables a user to create software on the personal computer to control the operation of the telephone station set associated with the personal computer. The user can implement new features and services independent of the operation of the business communication system.

Other References

BIZCOMP, brochure: "There's Only One PC/XT Modem Designed to Let Both You and Your Computer Talk on the Same Line", modem introduced in 1983
N. Accarino et al., entitled "Frame-Mode Customer Access to Local Integrated Voice and Data Digital Network", published in the Conference Report of the IEEE 1979 International Conference on Communications, pp. 38.5.1-38.5.7