Tone relay

Details Tone relay Tone relay

2006-04-25

2006-04-25

Rao, Seema S. (Department: 2666)

Multiplex communications

Communication techniques for information carried in plural...

Combining or distributing information via time channels

C370S283000, C370S386000

Reexamination Certificate

active

07035293

ABSTRACT:
A system and method for detecting and removing tones from an incoming communications channel that may also carry other signals such as, for example, voice is disclosed which includes pre-detecting tones in a communication signal, processing the communication signal to invalidate the tones in response to the tone pre-detection, forwarding the processed communication signal across a network, validating the tone and forwarding tone-on signals across the network in response to the validation.

REFERENCES:
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patent: 5666357 (1997-09-01), Jangi
patent: 6400709 (2002-06-01), Yousseff
patent: 6591234 (2003-07-01), Chandran et al.
patent: 6650662 (2003-11-01), Arnaud et al.
patent: 2002/0076034 (2002-06-01), Prabhu et al.
patent: 2002/0080953 (2002-06-01), Harada
patent: WO 00/05905 (2000-02-01), None
patent: WO 01/13586 (2001-02-01), None
European Search Report dated Oct. 5, 2005 for corresponding International Application No. EP 02 09 0146, in the name of Broadcom Corporation, 3 pages.

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