If the internet goes down, your panel will not be able to communicate with AlarmNet. But if you are looking to save money with less expensive monitoring service, then going IP-only is an option. In addition, the VISTA-20P, used with an alarm net Internet or digital communicator can be installed in Premises without telco lines with no sacrifice in functionality. will the 20P lose its config after you rplace the chip? I have a Total Connect 2.0 Vista 20P system that has a combination of hardwired and wireless sensors. Cellular service providers are currently in the process of shutting down their older 2G and 3G networks.