[arm-allstar] Fwd: Data Usage

[David McGough]

Just out of curiosity, I decided to test the bandwidth needed for a
simplex data stream with different CODECs, including IAX2 overhead. Here
are my results, in Kbytes per second (50 packets per second), as reported
by the iptraf-ng software:

All results in Kbytes-per-second:

GSM	3.2
iLBC	3.5
G726	5.5
ULAW	9.4


These data rates will be in-bound or out-bound, depending of if your local 
node is listening or talking to another node across the VoIP network. 

Also, if you happen to be running full-duplex, like 2 people on different
VoIP linked repeaters "doubling," there will simultaneously be an in-bound
and out-bound data stream, doubling the total data transferred.

73, David KB4FXC



On Wed, 10 Aug 2016, Mark Johnston via arm-allstar wrote:

> Including overhead I would estimate 100 kb/sec each way depending on codec
> -
> ALaw or ULaw vs GSM which is about half that.
> 
> Multiply that out for however long you stay connected...
> 
> 
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> 
> On Wed, Aug 10, 2016 at 2:06 PM, Marty via arm-allstar <
> arm-allstar at hamvoip.org> wrote:
> 
> > I was wondering what the data usage or minimum bandwidth requirements for
> > Allstar link?
> >
> > 73,
> > Marty KD4HLV
> >
> >
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