[c-nsp] VoIP without QoS

John Osmon josmon at rigozsaurus.com
Wed May 23 00:21:11 EDT 2007


On Tue, May 22, 2007 at 01:47:15PM -0500, Dan wrote:
> We have a voip system we have been running in our department now for
> about a year.  Only 12 phones, connected through various wireless links
> with throughput of up to 40mbit.  Speed is definitely not an issue for
> us, but we notice glitches with the quality on an ongoing basis.  We are
> currently implementing qos and are wondering what is the best way?

Most common wireless solutions don't really like a lot of small packets.
They tend to have too much overhead in the protocols, and you if you're
pushing small packets, you hit a pps limit long before anything comes 
close to using up the bandwidth you think is available.

While trying to research why VOIP over wireless networks, I ran into
this paper:
   http://www.it.uc3m.es/~acuevasr/publicaciones/LCS06.pdf



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