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:
Aug. 13, 2013
Filed:
Oct. 14, 2006
Rudolf Dollinger, Munich, DE;
Rudolf Dollinger, Munich, DE;
Adtran GmbH, Berlin-Siemensstadt, DE;
Abstract
In a method for checking a subscriber line with a first and a second electrical line, wherein each line is connected to an encoder/decoder via a subscriber line circuit, the first line is connected to ground, a resistance of the second line is increased, an audio signal is outputted from the encoder/decoder to the first line; and a first frequency-selective signal is measured at a point at which the encoder/decoder is connected to the first line. Further, the second line is connected to ground, a resistance of the first line is increased, a further audio signal is output from the encoder/decoder to the second line, and a second frequency-selective signal is measured at a point at which the encoder/decoder is connected to the second line. An amplitude difference between the first and second frequency-selective signals is ascertained.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile