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. 01, 1987
Filed:
Oct. 10, 1986
Thomas W Durston, Camarillo, CA (US);
Harris Corporation, Melbourne, FL (US);
Abstract
An improved telephone test unit is disclosed which permits the telephone line technician to selectively choose the audio reproduction of signals ocurring on the line without the use of the handset in the test unit. An auxiliary amplifier is provided to amplify the signals which are received from the telphone line. When the amplifier is activated, the transmitting unit and receiving unit of the handset within the telephone test unit are electronically muted to prevent undesirable audio feedback to the amplifier. The gain of the amplifier may be selectively varied between an off, low and a high gain condition. The amplifier is also usable in the 'monitor' condition of the telephone test unit.