Methods and apparatus for characterizing subscriber loop...

Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Of data transmission

Reexamination Certificate

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C379S001030, C379S024000, C379S027080, C379S028000

Reexamination Certificate

active

07068755

ABSTRACT:
In some embodiments, a method includes performing at least part of a digital subscriber line (DSL) handshaking process by transmitting at least one handshaking signal via a telephone subscriber loop, and analyzing the at least one handshaking signal to detect a characteristic of the telephone subscriber loop.

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patent: 2005/0021835 (2005-01-01), Palm

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