Essay On Jitter
Jitter
In connectionless and packet switched networks the information (voice packets) is divided into packets, this packet can travel by a different path from the sender to the receiver. When packets arrive at their intended destination in a different order then they were originally sent, the result is a call with poor or scrambled audio. [23] Jitter is technically the measure of the variability over time of the latency across a network. Jitter is one of the most common VoIP call quality problems.
-The Solution: Use Jitter Buffers
A jitter buffer temporarily stores arriving packets in order to minimize delay variations. If packets arrive too late then they are discarded. Jitter buffer functionality has been in Asterisk for quite some time now. However, knowing what jitter is in a voice over IP (VoIP) application and when to use a de-jittering buffer to manage it may still be misunderstood by some. In Asterisk, and generally speaking in VoIP, jitter is the divergence of an expected packet from its presumed arrival time. For instance, two packets may arrive at the same time, or out of order due to network congestion. These problems can cause audio quality to drop.
A jitter buffer then
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