What is a critical issue for VoIP customers with home security systems regarding power?

For VoIP customers with home security systems, the primary concern is the loss of alarm system monitoring capability without backup power. VoIP services rely on internet connectivity and often do not function during power outages unless there is an adequate backup power source, such as a battery backup or generator. Home security systems are typically designed to communicate with monitoring services through traditional phone lines, which can still function during a power failure. However, with VoIP, if the power goes out and there is no backup power for the router and modem, the communication link to the monitoring service is lost. This means that alarms may not be reported, potentially leaving homes vulnerable during emergencies. Thus, ensuring a reliable backup power supply is crucial for maintaining the alarm system's functionality in conjunction with a VoIP setup.