The alarm system is wired to take priority over all of the lines in the home. This prevents the system from being defeated by having a phone “off the hook” in the home. Was this article helpful to you? Related Articles How do I record video from another camera? How do I save Touchscreen Video Recording (TVR) video? Why is my subscriber portal not recording history/not recognizing when doors are opened? Why can’t I log into my app? Why is my Touchscreen black/frozen? Why can’t I view my cameras? Comments are closed.