No, not the Voice Command Application built into most Windows Mobile phones, but the Voice Command service wherein you call into Sprint's servers and they interpret your voice and connect your call. It was a for-pay service that was useful for some of the Sprint-based phones that lacked on-board voice recognition.

...Or a for-pay service for some Sprint-based phones (Cough Treo 700wx Cough) whose on-board Voice Command didn't really cut it because it didn't work with Bluetooth.

In any case, PhomeMag tells us that it's going the way of the Dodo on July 1st, so if you're using the service, be sure that you've got your contacts downloaded fully and start looking for another option - we recommend WM's Voice Command ourselves, though it's not nearly as fun and cool as Nuance Voice Control