Ok, you are correct, the PPC6700 is not running WM5.3, so it will not route the incoming call announcements through the BT headset. Voice Command 1.6 does close the audio gateway after a BT interaction.

How is it that you're using the audio gateway after using Voice Command? Would it be sufficient if you could issue a second voice command such as "open audio gateway" after the first command that would cause the audio gateway to open and stay open?