System for transmitting high quality speech signals on a...

Details System for transmitting high quality speech signals on a... System for transmitting high quality speech signals on a...

2004-02-12

2008-11-25

Ngo, Ricky (Department: 2616)

Multiplex communications

Data flow congestion prevention or control

Control of data admission to the network

C370S252000, C714S018000

Reexamination Certificate

active

07457242

ABSTRACT:
The VoIP quality speech process is activated when a subscriber accesses a speech quality sensitive resource or in response to an activation of the feature by the subscriber, or when it is determined that the originating subscriber terminal device requires the transmission of high quality speech signals. A transmit buffer, associated with the port circuit that serves the originating device, stores a predetermined number of packets as they are transmitted from the originating device. In the case of lost or damaged packets, the VoIP quality speech system activates the transmit buffer to retransmit the missing or damaged packet to the destination device. Intelligent buffer management is provided, where the destination device can regulate the size of the transmit buffer as well as the size of it's jitter buffer.

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patent: 5506872 (1996-04-01), Mohler
patent: 6807150 (2004-10-01), McNiff et al.
patent: 2002/0027880 (2002-03-01), Mesiwala
patent: 2003/0026275 (2003-02-01), Lanzafame et al.
patent: 2003/0133408 (2003-07-01), Cheng et al.
patent: 2004/0017806 (2004-01-01), Yazdy et al.
patent: 2004/0057456 (2004-03-01), He et al.
patent: 2005/0047402 (2005-03-01), Bostrom et al.

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