Why do callers report hearing a “Fax” like tone or the words “System-System” on my phone line?
A. Alarm panels have the ability to answer incoming calls. The caller will hear a “Fax” like tone or the words “System – System”. This feature is activated by calling the residence and allowing the phone to ring one time, and then calling back to the same number. This feature is used by our download software to access your programming when changes are needed, or for your system to be controlled by you via a touch tone phone if available.
