Yeah... I escalated this issue thru the ranks of VZW WDTS, and eventually with RIM. RIM's answer:
The only 2 ways to do it are to a) dial from a pre-existing phonebook entry, or b) connect a wired headset to the headset jack (this will simply redirect the obnoxious tones into the headset instead of out of the speaker).
Both 'solutions' are unacceptable IMO