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:
Nov. 16, 1993
Filed:
Nov. 18, 1992
Applicant:
Inventors:
Roger A Nightingale, Fairfax, VA (US);
Makan Abousaeedi, Reston, VA (US);
Winston M Gadsby, Herndon, VA (US);
Assignee:
Hubbell Incorporated, Orange, CT (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04M / ;
U.S. Cl.
CPC ...
379 90 ; 379 93 ; 379 97 ; 379236 ; 379377 ;
Abstract
On-hook VF transmission through a channel unit to a subscriber telephone instrument is provided by a control unit which generates control signals for the channel unit. The control unit responds to receipt of an 'idle' code by creating commands which establish a VF path through the channel unit regardless of whether the subscriber instrument is on-hook or off-hook.