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...

2006-09-28

2009-10-20

Mattis, Jason E (Department: 2416)

Multiplex communications

Duplex

Transmit/receive interaction control

C370S286000, C379S406040

Reexamination Certificate

active

07606183

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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