Predicting performance of telephone lines for data services

Details Predicting performance of telephone lines for data services Predicting performance of telephone lines for data services

2005-05-17

2005-05-17

Nguyen, Duc (Department: 2643)

Telephonic communications

Diagnostic testing, malfunction indication, or electrical...

C379S001040, C379S022040, C379S027010, C379S015030

Reexamination Certificate

active

06895081

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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