I have a Treo 750, and I've used various wired headsets to listen to music without problem. I have also synched several bluetooth headsets (Jabra, Plantronics and a Cardio-Scala) for phone calls without issues.

I wanted to try out the HS820 for its bluetooth stereo music and phone headset attributes. The bluetooth music works fine, but while the HS820 is active as a bluetooth device I am unable to make or receive calls with the phone.

I contacted Motorola, and they suggested I contact the Treo folks. Anyone else experience issues with this unit and their Treo?