Echo canceller disabler for modulated data signals

Details Echo canceller disabler for modulated data signals Echo canceller disabler for modulated data signals

2006-01-23

2009-08-04

Pezzlo, John (Department: 2419)

Multiplex communications

Duplex

Transmit/receive interaction control

C375S350000, C379S406080

Reexamination Certificate

active

07570608

ABSTRACT:
A method and system receives a far-end signal and determines whether the far-end signal is representative of a modulated signal. The method and system also receives a near-end signal and determines whether the near-end signal is representative of a modulated signal. Predetermined characteristics of the near and far-end signals are determined as is whether the echo canceller will converge for the far-end signal. The operation of the echo canceller is controlled in response to the determination of the predetermined conditions and in response the determination of whether the far-end and near-end signals are modulated signals.

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ITU-T Recommendation V.8 (1994), “Procedures for starting sessions of data transmission over the general switched telephone network”.
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