[Asterisk-Users] frames/packet

Paul Lambert paul at digis.net
Wed Sep 3 11:27:47 MST 2003


I'm thinking about SIP as well.

Martin Pycko wrote:
> 
> Unless you use IAX2 trunking that would limit 32 calls to 50 packets/sec.
> 
> Martin
> 
> On Wed, 3 Sep 2003, Paul Lambert wrote:
> 
> > "Not yet." implies that it is coming. I know it would help on Internet
> > connections such as fixed wireless and cable modem where packet rate is
> > an issue. 20ms translates to 50 packets/sec. I believe cable modem
> > upstream packet rates cap at 150-200 packets/sec. G729 gets the bit rate
> > down to 8kbits. So based on a bit rate of 256K the theory is that the
> > link could handle 32 calls. But, that would produce packets coming out
> > at a rate of 1600 packets/sec beyond the limitation of most Internet
> > connections including a T1.
> >
> >
> >
> > Martin Pycko wrote:
> > >
> > > Not yet.
> > >
> > > Asterisk always sends 20 ms of voice data per packet.
> > >
> > > regards
> > > Martin
> > >
> > > On Wed, 3 Sep 2003, Paul Lambert wrote:
> > >
> > > > Noticed that I can adjust the number if frames/packet on the GrandStream
> > > > phone. Can * do the same?
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> > > >
> > >
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> 
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