Nokia Car Kit compatability...V3

Hi all,

I have just had a Nokia CK-7W carkit installed in a company car.
Everyone has Nokia 6230's appart from me. I have a V3.

The Nokia's work perfectly with the Bluetooth carkit.

My V3 also works perfectly appart from a MASSIVE echo / feedback for
the person at the other end.

e.g I have a conversation with someone bia carkit/bluetooth. I can
hear them fine and they can hear me fine, BUT they can also hear every
word they say repeated in the phone - very anoying.

Is there a way around this? Is it a known problem and is there a
solution???


Thanks
Jon