Simple workaround (Score 1)

If you are concerned that a call might end up in your cell phone log, why not call one of the calling card services (I've been pretty happy with Onesuite.com) from your cell? This way the only thing showing up in your cell-log would be the dial-in number for that service. This is also a useful tool if you have to call somebody back from your cell who doesn't accept blocked number calls and you don't want to disclose your cell #. Examples might be you have to call a customer/one of your sales folks back from your personal cell phone...

Heiko