Method and system for transmitting digitized voice signals...

Details Method and system for transmitting digitized voice signals... Method and system for transmitting digitized voice signals...

H - Electricity

04

J

363/1

H04J 3/17 (2006.01) H04L 12/64 (2006.01)

Patent

CA 1227295

ABSTRACT A method of transmitting digitized voice signals as packets of bits in a digital transmission network to which a plurality of terminals acting as sources of voice signals are attached. The method includes, at the transmitting end and for each source, the steps of : dividing the signal into successive, digitally-coded segments; performing a so-called source activity detection; and assembling the bits resulting from the coding operation into packets, each packet being provided with a header containing, in particular, a parity bit whose logic value is modified whenever an inactivity or long pause is detected. At the receiving end, detection of a change in the value of said parity bit causes the delivery of a packet of bits to the decoder/synthesizer to be delayed by a given time interval called retention delay.

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