The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 22, 1981
Filed:
Mar. 28, 1979
Wayne Densmore, Eatontown, NJ (US);
Thomas M Quinn, Little Silver, NJ (US);
Bell Telephone Laboratories, Incorporated, Murray Hill, NJ (US);
Abstract
A communication system call tracking arrangement is disclosed which allows a telephone station user to selectively determine the busy-idle status of any other telephone station served by the same system, without utilizing the communication links between the stations. In operation, the inquiring station has the capability of selecting a target station and for receiving a continuous visual indication of the busy-idle status of the selected target station. In one embodiment, it is possible to selectively enable the tracking feature so that an audible signal is provided at the inquiring station when the target station makes a busy-idle status transition.