We installed this system a month ago and after a few initial hiccups it's working just fine. The price point and ability to install ourselves were the primary reasons for choosing this system once we read the reviews.I found the self installation instructions to be mediocre at best. They should have one separate booklet addressing installation of the system and the other addressing how to program both the system and individual phones. The instructions were unclear on a number of important points forcing us to do trial and error repeatedly. I must have re-initialized the system 15 or 20 times during set up. Unless you have experience wiring jacks, do what we did and have the phone company install modular jacks where the phone lines enter your premises. Apparently that's not extremely common in office building applications in some areas. We did not wire to jacks at each extension, we wired from the Xblue box directly to each phone; worked just fine.As another reviewer said, note that this is a good phone system, not a great one. The value however is exceptional.Overall I'm really happy with the system; we saved money on purchase, installation and not needing a maintenance contract.