nanog mailing list archives

Re: What vexes VoIP users?


From: Michael Thomas <mike () mtcc com>
Date: Wed, 02 Mar 2011 08:50:44 -0800

On 03/01/2011 11:50 PM, Owen DeLong wrote:
It's worked out great for me in a number of places. OTOH, it was kind
of dicey even without the torrents from other places.

I found that bandwidth and jitter were the bigger issues than other
applications I was sharing the link with.

I even managed to get passable call quality (though far from ideal)
calling the US on a US third party provider from my soft-phone on
my laptop from Kigali, Rwanda. I think that's close to a worst case
scenario, frankly.

These days, voice is a very low-bandwidth service. On any decent
link, it seems to get through just fine.

Right, if it wasn't skype would be useless which it manifestly
isn't. Which is why all the heavy machinery to dynamically
provision qos for the rtp flows was, per typical, overwhelmed
by moore's law. I floated that heresy about 10 years ago, but
by then there was too much invested in seeing it through.

Mike, skype shows you can do all manner of horrible things
 and still work... real time media over tcp!


Current thread: