I have a V551 and Blutooth headset HS820. Both are only 2 weeks old.
The problem I am running in to is occasionally during a call it will
hang up. I get the same three tones (High to low) as if I had pushed
the button on the headset. I am well within range and both batteries
are fully charged. I also have full signal on the phone.

We are having this problem on two sederate phones and headsets. Both
are the same setup.

Any idea what is causing this?

See More: V551 and HS820 Hang Up Problem