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Re: [ns] Model for voice-over-ip (fwd)
I think the data rate would depend on the codification scheme you want
to represent. If representing PCM with silence supression, which
seems to be the case, we use 64 kbps on off sources.
The on and off periods, however, are not the same as suggested.
Saulo
On Wed, 20 Jun 2001, George Riley wrote:
> Hi Carlos, thanks for the advise. Two questions..where did you get this
> info (is it published somewhere)? and what is the data rate during the on
> period (in other words, how many bytes/sec should be generated during the
> on period)?
> Thanks.
> George
>
>
> -George F. Riley ([email protected])
>
> On Tue, 19 Jun 2001, Carlos Alberto Kamienski wrote:
>
> > Maybe you could use On-Off sources (Application/Traffic/Exponential)
> > with On periods (burst-time) of 1.004 s and Off periods (idle-time) of
> > 1.587 s.
> >
> > Carlos
> >
> > On Tue, 19 Jun 2001, Debojyoti Dutta wrote:
> >
> > > You could use a real audio model. It could be used as an approximation.
> > > Isnt it ?
> > >
> > > Debo
> > >
> > > On Tue, 19 Jun 2001, George Riley wrote:
> > >
> > > > Does anyone have (or know of) an ns model for voice-over-ip traffic?
> > > > Suppose I want to model 60 seconds of voice traffic..what i would like is
> > > > a "voice application" that sent bursts of data that (more or less) match
> > > > what one would expect for a VOIP end system.
> > > > Ideas?
> > > > George
> > > >
> > > >
> > > > -George F. Riley ([email protected])
> > > >
> > > >
> > >
> > >
> >
> >
>