Hello boe,
welcome to the Polycom Community.
I already replied => here<= in the unrelated post.
We do support Bluetooth on the VVX600 / VVX 601 series
The VVX401, VVX411, VVX500, VVX501, VVX600 and VVX601 support USB.
You can either use a native USB Headset or try a Bluetooth dongle.
Its impossible to test all of these dongles but an overview of supported and tested headsets is here:
Oct 19, 2011 Question: What type of Headset's and cables are compatible with my Phone?
Resolution: Please check => here <=
Please ensure to provide some feedback if this reply has helped you so other users can profit from your experience.
Best Regards
Steffen Baier
Polycom Global Services