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:
Dec. 24, 1985
Filed:
Aug. 15, 1983
Applicant:
Inventors:
Robert A Carson, Indianapolis, IN (US);
Francis M Fenton, Middletown, NJ (US);
David F Jones, Middletown, NJ (US);
Assignee:
AT&T Information Systems Inc., Holmdel, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04M / ; H04Q / ;
U.S. Cl.
CPC ...
179 / ; 179 / ;
Abstract
In the disclosed call transfer method and circuitry, audibly distinguishable ringing signals at a station set enable an answering party to determine whether a received call is either the original call or a previously answered call. Line status LEDs at each station set give specific visual indications to trace the progress of a call transfer.