Telephony Products
ITU-T G.165/G.168 Network Echo Canceller
A multi-channel digital network
echo canceller (DNEC) is used for echo control on international and mobile
telephony circuits. They are voice-operated devices, which are placed in the
4-wire portion of a network and used for reducing the echo caused by impedance
mismatches in the circuit. An echo estimate is generated, and subsequently
subtracted from the circuit echo.
The software is compliant with
ITU-T G.165 and G.168 recommendations and includes non-linear processor (NLP)
and 2.1kHz tone detector.
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