I've gone through two Motorlola H700 headsets- at first they paired, then were not recognized (by my 8100 and on a S/E Phone) so I figured just bad luck - now I have a Plantronics 610 - it paired - it establishes a connection - then it loses it - then it flips back and fourth between established and lost - I took battery out, rebooted, everything - I think it's the phone - any ideas / suggestions out there? Thanks.