VoIP bandwidth

Archived from groups: comp.dcom.voice-over-ip (More info?)

"Erhard Ducke" <wird-nicht-gelesen-weil@nurfuerspam.de> wrote in message
news:10cph0h3aprn0j2vf9h40ev1k7iljv7neg@4ax.com...
> Hi cdv!
>
> How much traffic is caused by VoIP?

How long is a peice of string ?

> I know that there are many codecs in use therefore I give you some
> more information:
>
> I'm working with the German 'Fritz!Box Fon' and plan to use
> http://www.sipgate.de as VoIP provider.
>
> On their website they say that the data traffic is about 100 MB per
> hour so it should be about 300 kbps.
>
> Is it obvious from this information what codec is used?
> Is this traffic calculation realistic?
>
> Why did my DSL-Provider calculate about 4-6 MB per minute when I
> talked to the hotline?
>
> Thanks for any advice!

Modern codecs use between 8-16Kb/s per call and older ones can use 64Kb/s
per call, however you need to work out your call duration and concurrent
call number to work out your bandwidth.
Packetizer has a good tool that can help you work this out, although you may
need to ask some questions of you voip provider to get the right info:

http://www.packetizer.com/iptel/di [...] dcalc.html

> --
> Regards
> Erhard

HTH

-=-peas-=-