I am having problems adding numbers to the address book of my Hands
Free System. It does not recognize numbers I say. I have tried many times to
speak clearly, slowly and loudly and it still mistakes 6 for 8s and other
similar problems.
I have also tried to receive calls through this and the caller complained that
they can't hear me clearly. My windows were up and the A/C was not on so it
shouldn't have affected clarity.

Any tips?

Thanks.