The Bundle includes most everything you need with the exception of LAN infrastructure (wiring, switches, Cat-5 jumpers, wall plates, etc.) and UPS power protection. When ordering your Bundle, you can elect to purchase a UPS to provide backup power for your VoIP service in the event of AC power failure. If you do not elect to purchase a UPS and you do not have your own UPS of sufficient capacity, you will not have phone service during any power outage – you will also not have any 911 service during power outages (see Product Limitations for more information).