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Notice of Retraction
After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE's Publication Principles.
We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.
The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.
In voice-over-IP systems, IP packets are transmit according to best of effort principle, so here usually existing jitter or packets loss, packet error. Jitter concept, common network impairment system model and common jitter handle model are introduced in paper. Two kinds of JB (jitter buffer) options are both used in PEM board and they are respectively flexible to comfort fixed and time-variant network by analyzing jitter handling characteristics.