Method and apparatus for improving voice quality in a packet...

Details Method and apparatus for improving voice quality in a packet... Method and apparatus for improving voice quality in a packet...

2008-05-20

2008-05-20

To, Doris H. (Department: 2616)

Multiplex communications

Communication techniques for information carried in plural...

Adaptive

C370S395640, C370S517000

Reexamination Certificate

active

07376148

ABSTRACT:
Some embodiments adaptively adjust to the current call load in a packet based virtual circuit to minimize the delay experienced by the first packets of any talk spurt for a particular active call. Some embodiments minimize the jitter introduced by multiplexing voice packets by smoothing out the waiting time experienced by each of the voice packets. Some embodiments effectively minimize jitter when the number of active calls on a virtual circuit drops off suddenly. Some embodiments are able to differentiate signaling packets indicating a telephony event from voice packets and give the signaling packets expedited processing with no delay contributed by the subcell multiplexing process. Other embodiments are described in the claims.

REFERENCES:
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patent: 6229821 (2001-05-01), Bharucha et al.
patent: 6282196 (2001-08-01), Lyons et al.
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patent: 2003/0028661 (2003-02-01), Burger et al.
patent: 2003/0099240 (2003-05-01), Lee
ITU-T I.366.2, AAL type 2 service specific convergence suglayer for trunking, Feb. 1999, ITU-T, pp. 6,10,11,1,20.

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