I purchased the Plantronics 855 with the sole purpose of synchronizing bluetooth headset with Softick Audio Gateway software for the Palm Treo 755p.  The pairing process works well without any issues.  Audio Gateways allows you to go directly to Pocket Tunes or to the Bluetooth setup program. Although you can pair this device using the standard protocol, doing the sync through Audio Gateway pairs it for use with the phone.  Ok, so far so good.