To correctly use the RJ31X jack, how must the wiring be terminated?

The correct approach to terminating wiring for an RJ31X jack involves connecting the tip and ring from the EMTA (Embedded Multimedia Terminal Adapter) to the designated green and red terminals of the jack. This setup is critical because the RJ31X is specifically designed for alarm systems that require the ability to intercept the telephone line for alarm signaling while allowing other devices, such as telephones, to function normally.

By connecting the tip and ring from the EMTA to the correct terminals, the alarm panel can properly detect a phone line signal and operate effectively, ensuring that any alarms can dial out as intended. This wiring configuration is a standard practice for maintaining a proper communication pathway between the alarm system and the telecommunications provider, supporting both alarm functionality and standard telephony usage concurrently.

Using incorrect terminations, such as terminating all wires to the same terminal or only connecting premises wiring, would interfere with the necessary functionality of the alarm system. Similarly, isolating the alarm panel from all other wiring can prevent it from receiving the signal needed for operation and negate the advantages of using the RJ31X jack.