Installed one in mid 2011. Easy install and programming. Was called back to site a few months later for various quirky issues. All issues were addressed with the latest firmware upgrade which at the time was 2.2.0. The gateways and all phones were updated. I've been back to the site several times but not for system related issues but always ask how the system is performing. It's not a powerhouse but does fill a niche. Programming is through a browser and so easy a monkey like me can do it!