A side note, if you have been calling me and receiving the above message, please try you call again later. All circuits are busy sending angry email to Cingular customer service about how they will be replaced by another provider if they don't get on the ball. Thank you.
If you are in the Bay Area, I would hold off on getting a Cingular wireless phone for a while. Cingular has oversold their system. This results in every third call-in (or out) receiving the dreaded 'All circuits are busy. Please try your call again later.'