Modem-Panel Comm Error indicates that your security panel is unable to properly communicate and may not receive signals from your devices and may not trigger an alarm or signal for help in an emergenc...Modem-Panel Comm Error indicates that your security panel is unable to properly communicate and may not receive signals from your devices and may not trigger an alarm or signal for help in an emergency. How to resolve: Contact your service provider for assistance.
When a system is in test mode with the monitoring station, the monitoring station is not going to respond to alarms (i.e., dispatch police) from the system during that time.