Devices, softwares and methods with improved performance of...

Details Devices, softwares and methods with improved performance of... Devices, softwares and methods with improved performance of...

2006-10-31

2006-10-31

Nguyen, Steven (Department: 2616)

Multiplex communications

Duplex

Transmit/receive interaction control

Reexamination Certificate

active

07130281

ABSTRACT:
Devices, softwares and methods send a warning signal when a periodic signal is present in the audio content of a VoIP connection. In response to the warning signal, an acoustic echo canceller of an IP telephone discontinues its adapting process. A signaling network switch detects when a periodic signal is present in the audio content, and issues a warning signal. A signaling call manager device, when it transmits a tone that has periodicity, it also transmits a warning signal.

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patent: 6735303 (2004-05-01), Okuda
patent: 2002/0064168 (2002-05-01), Garakani et al.

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