Predicting performance of telephone lines for data services

Patent 7263174 Issued on August 28, 2007. Estimated Expiration Date:

February 18, 2025. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

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Inventors

Assignee

Teradyne, Inc.

Application

No. 11060904 filed on 02/18/2005

US Classes:

379/1.04, Qualifying line for data transmission379/22.02, By analysis of injected tone signal379/22.07, Telephone multiconducting wires (e.g., tip, ring and ground wires)379/24, Electrical parameter measurement (e.g., attenuation)379/30, Loop impedance (e.g., resistance, capacitance)379/32.02, Trunk or long line324/525, By resistance or impedance measuring324/527, By applying a test signal379/1.01, DIAGNOSTIC TESTING, MALFUNCTION INDICATION, OR ELECTRICAL CONDITION MEASUREMENT379/1.03Of data transmission

Examiners

Primary: Tieu, Binh K.

Attorney, Agent or Firm

Wolf, Greenfield & Sacks P.C.

Foreign Patent References

0722164 EP 07/01/1996
WO91/11872 WO 08/01/1991
WO98/44428 WO 10/01/1998
WO99/63427 WO 12/01/1999
WO 00/27134 WO 05/01/2000
WO 00/64132 WO 10/01/2000
WO 01/01597 WO 01/01/2001
WO 01/24490 WO 04/01/2001
WO 01/67729 WO 09/01/2001

International Classes

H04M 1/24
H04M 3/08
H04M 3/22

Abstract

A method characterizes a customer line for data transmission. The method includes measuring electrical properties of the customer line from a central location, identifying a line model from the measurements, and identifying a modem model for a modem selected for use with the customer line. The modem model gives performance data for the selected modem. The method also predicts performance data for the customer line when operated with the selected modem by combining the line and modem models.

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