RE: [ns] VoIP traffic generator

["Sergio Andreozzi" <sergio.andreozzi@lut.fi>]

> 	Somewhere I read for the simulation of voice traffic
> exponential distributed traffic with mean values for the on/off
> times of 3 seconds should be used. So maybe the
> Application/Traffic/Expo already does the job.

3s it's seems to be to much. After some research here it is what I found:

set e [new Application/Traffic/Exponential]
$e set packetSize_   84          ;# corresponds to a filling time of about
10 ms
$e set burst_time_  350ms
$e set idle_time_   650ms
$e set rate_         64k         ;#

This should be a valid model for standard PCM codec with uncompressed on
period and silence suppression.

Does anyone of you have a valid model for ITU-T G.729 voice traffic?

Please, send comments.

Sergio


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Sergio Andreozzi

email: sergio.andreozzi@lut.fi