I have several VVX-600s with which I have tried to use two bluetooth handsets, and have had connections with any combination of VVX-600/Plantronics PLT-4210 or VVX-600/PLT-Edge. In any combo, the bluetooth is garbled during call (corded audio is crystal clear...one of my reasons for choosing Polycom in the first place!) and then after hanging up, the bluetooth connection just drops entirely. The headsets show in the settings, but won't connect until a full reboot.
Help?!