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In this paper, a new adaptive receiver buffer adjust algorithm is proposed for VolP applications with the consideration of voice characters and network conditions. It divides network status into two modes: normal mode and spike mode, according to the delay of the coming packets and the size of buffer. In normal mode, the receiver adjusts the buffer delay at the beginning of every talk-spurt according to the delay jitters collected during the last talk-spurt. In spike mode, two buffer adjust methods are proposed.
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