What feature allows two-way communication between a central station and the facility where the security system is installed?

What feature allows two-way communication between a central station and the facility where the security system is installed?

• A. Voice verification
• B. Cross zoning
• C. Acoustic glass break detector
• D. Stress sensor

Answer: (A)

Two-way voice capability is what links the central station with the site in real time. It provides an audio channel so the operator can speak to people at the facility and hear their response, which is essential for confirming alarms, giving instructions, or coordinating a response. In many systems this function is described as voice verification, emphasizing the live audio link between the monitoring center and the site. The other options are sensors or zoning features that don’t enable direct communication: cross zoning manages how zones trigger to reduce false alarms, the glass-break detector senses an impact or break, and the stress sensor measures physical strain. Thus, the feature that enables real-time dialogue is the voice capability.

Two-way voice capability is what links the central station with the site in real time. It provides an audio channel so the operator can speak to people at the facility and hear their response, which is essential for confirming alarms, giving instructions, or coordinating a response. In many systems this function is described as voice verification, emphasizing the live audio link between the monitoring center and the site. The other options are sensors or zoning features that don’t enable direct communication: cross zoning manages how zones trigger to reduce false alarms, the glass-break detector senses an impact or break, and the stress sensor measures physical strain. Thus, the feature that enables real-time dialogue is the voice capability.