asterisk users - Aug 2003 - Workaround for BudgeTone "ringing in your ear?"

Just wondering if anyone knows of a workaround for the BudgeTone being 
signalled while off-hook, and then instead of playing nice with call 
waiting allowing the conversation to be ruined with ringing tones.

I am trying to figure out how to test this phone fully, including 
allowing incoming calls to ring in to it, with this bug.

Thanks.

B.