A monitored alarm system works by sending out communication signals that alert others to system events. These alerts can be sent to a central monitoring station, directly to the end user, or both. In most cases, the signals will be sent through an IP connection or a cellular connection. When a system is monitored, it means that the system is able to send outbound signals. Without monitoring service, an alarm system can only be used as a local noise maker. An unmonitored system will have no way of alerting off-site users to an alarm event, and it will be unable to request automatic emergency dispatch. That is why it is very important that any alarm system receives monitoring services.