Hello,
I have setup my bandwidth to 50kbps. When I call to Canada, the audio from the other end gets distorted. But when I receive a call from the same party, the audio is good in both ways. But sometimes, audio is very clear even when I make the call. So my experience is mixed - good and so-so.

In one of my previous postings, I have posted the instruction how to change the bandwidth -- http://www.qatarliving.com/node/635819

Cheers