Poor BT handsfree call audio quality

[Guest pter]

I recently bought a Diamond, and since I had experience from poor audio quality in A2DP from previous phones I went directly to this forum to find the recommended registry settings. Now, when BitPool and MaxSupportedBitPool are removed and SampleRate is added and set to 48000, music sounds nice.

The calls made with my HTC BH S100 still sounds really crappy, and at the other end people have trouble hearing me. That didn't happen with my previous phone and the same headset so I wonder:

Are there any registry-tweaks available to enhance the audio quality of my calls over bluetooth?

Thanks,

Peter