[wellylug] VOIP calling band-width usage

[Jethro Carr]

On Fri, 2007-08-17 at 19:57 +1200, Cliff Pratt wrote:
> Richard Wade wrote:
> > On Fri, August 17, 2007 15:41, Richard Wade wrote:
> > 
> >> The numbers I'm using are roughly 50kb/s for the VoIP, considering that
> >> Skype uses G.729 and that it's a nice round number. For video, I think I
> >> measured by gateway doing about 120-150kb/s (from vague memory), so
> >> roughly three times the VoIP-only bandwidth. I'm considering that the
> >> bandwidth usage is counted in both the upstream and downstream directions.
> > 
> > Replying to my own message here, but noticed that I've made the assumption
> > of G.729 codec (hence around 50kb/s-ish in each direction). This is
> > certainly the codec I've seen used for Skype to PSTN calls. I believe
> > Skype uses a proprietary licensed codec for Skype to Skype calls, which
> > probably uses much less bandwidth. I've not taken these measurements, but
> > I'm sure a quick Web search will reveal further information. The upshot of
> > this is that if you're talking Skype to Skype (as opposed to using
> > SkypeOut to call the PSTN), then you'll get many more call minutes to your
> > GB of cap usage.
>  >
> How do people find Skype? I've heard of it hosing Linux systems. There 
> doesn't seem to be a package in Ubuntu, not that that is a big problem.

Skype's a piece of buggy, unstable crap. 

I've had it regularly crash, lock up the whole system for a minute and
found various bugs with it's features.


-- 
Jethro Carr

www.jethrocarr.com
www.jethrocarr.com/index.php?cms=blog

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