Setup of the unit was very straight-forward. An 800# was included to help you make sound and quality adjustments.The automatic lifter for the receiver works fine, although our commercial telephone system is definitely not well-designed for this. The cradle for the handset is open at the bottom so, initially, when the lifter activated, the handset would slide downward and wouldn't re-seat in the cradle when I disconnected. I solved this by actually running the handset cord directly under the phone itself to hold the cord in place so there is no play when it lifts - and when I disconnect, it sets back in place.One of my partners has walked out of the office to "use the facilities" more than 20' down the hall using an identical unit and still has reception while taking care of his business - not that I would recommend that.Two criticisms - First - even though there are included a variety of changeable foam ear pads or plastic ear inserts, and I wear glasses, none of them feel like they fit securely in my ear. However, I have yet to have the earpiece fall off so I may just need to get used to it.And second - I have to remember to hand signal anyone I encounter while on the phone - that I AM ON THE PHONE so WATCH WHAT YOU SAY - and - WHAT I JUST SAID WAS NOT DIRECTED TO YOU . . .This unit makes a world of difference when talking on the phone "hands-free". It feels more natural and is definitely preferable to using the non-private speakerphone utility.I highly recommend it.