"Chris Davies" <chris-usenet@roaima.co.uk> wrote in message
news:g84hd5xg6p.ln2@news.roaima.co.uk...[color=blue]
> Asymmetric codec negotiation?
> Chris[/color]

* Indeed, this could be the case. Incoming and outgoing Codecs do not
necessarely have to be the same.
* And of course .... more talking than listening could influence different
up- or download volumes.