Where is the typical location of an RJ31X connection?

Where is the typical location of an RJ31X connection?

• A. In the basement
• B. On the roof
• C. In the main service panel
• D. Inside the alarm box

Answer: (D)

The RJ31X connection is placed where the fire alarm equipment can supervise and control the phone line that the system uses to dial out. That means it should be mounted with or very close to the alarm control box so the line being monitored is part of the same supervised circuit and the panel can seize the line if an alarm occurs. Putting it inside the alarm box keeps the wiring compact, reduces tampering risk, and ensures proper signaling. Locations like the basement or roof separate it from the control equipment and aren’t practical for supervision, and placing it in a main service panel would detach it from the fire alarm apparatus. So, typical installations have the RJ31X inside the alarm box.

The RJ31X connection is placed where the fire alarm equipment can supervise and control the phone line that the system uses to dial out. That means it should be mounted with or very close to the alarm control box so the line being monitored is part of the same supervised circuit and the panel can seize the line if an alarm occurs. Putting it inside the alarm box keeps the wiring compact, reduces tampering risk, and ensures proper signaling. Locations like the basement or roof separate it from the control equipment and aren’t practical for supervision, and placing it in a main service panel would detach it from the fire alarm apparatus. So, typical installations have the RJ31X inside the alarm box.