Which of the following methods can signals use to reach the designated monitoring site?

The correct choice indicates that signals can use various methods to reach the designated monitoring site, encompassing phone lines, wireless networks, and internet connections. This versatility is essential for ensuring reliable communication in security systems.

Using phone lines allows for traditional landline communication, which can be effective in areas with stable phone service. Wireless networks provide flexibility by transmitting signals without the need for physical wiring, which is advantageous in remote or difficult-to-wire locations. Internet connections, particularly through broadband, enable high-speed communication and can support advanced monitoring and alerting features, such as real-time notifications and remote access.

This variety ensures that security systems can maintain functionality across different environments and preferences, accommodating various infrastructure setups. Each method has its strengths and weaknesses, but collectively, they enhance the effectiveness and reliability of security monitoring systems.