"Ivor Jones" <ivor@despammed.invalid> wrote in message
news:3snj9kFo9a6oU1@individual.net...

> Bandwidth, I don't know, I haven't checked recently. Codec, proprietary.
> Nobody except Skype know the full details.

The Skype sound engine is powered by Global IP Sound and is not proprietary.
The following link decribes the GIPS engine
http://www.globalipsound.com/datasheets/VoiceEngine.pdf


Regards,

Paul