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Clear a Phone Line Failure on an Interlogix Simon XTi

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Clearing a Phone Line Failure on an Interlogix Simon XTi depends on if there is a phone line connected to the panel. A Phone Line Failure, also known as TLM/PLF/FTC, occurs if the panel either:

  • Has a phone line attached to the panel but the phone line is unable to communicate.
  • Has monitoring station information programmed into it but the panel does not have a phone line attached to it. 

If a phone line is connected:

  • Resolve the phone line communication.

For more information about connecting or troubleshooting the phone line locally, contact the panel manufacturer.

If a phone line is not connected:

If there is no phone line attached, it is required to remove the monitoring station information programmed from the panel because the information is stored in the module.

The monitoring station account information can be cleared locally at the panel. All of these methods require a local power cycle of the panel.    

  1. Tap Settings.
  2. Scroll to Programming, then tap Enter.
  3. Enter the installer code.
  4. Tap Security.
  5. Verify Account Number is all 0's.
  6. Return to Programming, then verify all Phone Numbers are blank.
  7. Power-cycle the panel locally to ensure these settings take effect.