Setup guide

IBM Lotus Sametime 7.5 Release Notes Installation, migration, upgrade, and configuration
The CPU requirement for hosting calls is 'medium': a 1GHz machine can easily mix a 3-way call; a 2GHz
machine can mix a 5-way call easily. During a voice chat call, the Sametime process is running at high
priority under Windows (regular priority under Linux), because voice processing needs to be real-time to
avoid quality issues. After the call terminates, the process goes back to normal priority.
If the user drags windows around (especially chat windows), or does some other activity which is either
CPU or network intensive, the quality of the call will decrease. The codec will try to automatically recover
when conditions improve. This process can take a few seconds. By pausing/resuming their calls (by
clicking the "pause" / "resume" button on the audio toolbar of the chat window), the user can force a
"reset" of the call quality; this is equivalent to ending and starting a new call.
It is recommended that you disable or reduce any download or other CPU-intensive activity during a call,
in order to obtain maximum quality. Network administrators might want to mark the UDP packets from
port 20830 with a higher class of service in order to increase voice quality.
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