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:
Mar. 27, 2001
Filed:
Aug. 27, 1999
Todd A. Pett, Longmont, CO (US);
Richard H. Fink, Aurora, CO (US);
James W. Nevelle, Highlands Ranch, CO (US);
Qwest Communications International Inc., Denver, CO (US);
Abstract
A test procedure for a VDSL distribution loop utilizes loop pre-qualification based on information stored in a network database in combination with field tests that are performed to confirm minimum performance capabilities of pre-qualified loops. During qualification, a VDSL test signal is sent on the loop, and SNR and bit error ratios are measured for desired upstream and downstream transmission rates. These measurements are compared to threshold values to verify performance of the loop for VDSL use. Thus, a cost effective test process is provided which allows accurate test data collection for sensitive VDSL distribution loops without the need for any pre-provisioning of the loop, and to allow for validation of the loop configuration database.