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codec
Codecs are algorithms specially designed to compress audio and video data.
jitter
Jitter is the variance of latency (delay) in a connection. Audio devices or connection-
oriented systems, like ISDN or PSTN, need a continuous stream of data. To com-
pensate for this, VoIP terminals and gateways implement a jitter buffer that collect
the packets before relaying them onto their audio devices or connection-oriented
lines (like ISDN). Increasing the size of the jitter buffer decreases the likelihood
of data being missed, but the latency of the connection is increased.
8.8 For More Information
For general information about VoIP, check the VoIP Wiki at
.org/tiki-index.php. For a comprehensive list of providers offering VoIP ser-
vices in your home country, refer to
+Service+Providers+Residential.
http://voip-info.org/wiki-VOIP
http://voip-info
Using Voice over IP
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