External Services
External security and surveillance services are available from private companies which are connected by dial-up phone service to the home security system. Another type of service is available for residents who want to check on the status of the security system when they are away.
External Alarm Monitoring Service
Professional alarm monitoring companies provide 24-hour service for residential security systems for a monthly fee. Monitoring service attendants have a computer system and display with a database containing information about each subscriber. As discussed previously, security systems are designed to send a digital message via phone lines to a central monitoring facility. The attendants contact police or a private armed ...
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