State Fire Marshal Advises Those Using New Communication Technologies to Test Their Alarm Monitoring Systems Most alarm systems communicate with alarm monitoring centers through a telephone line using a complex touch-tone signal sent to the alarm monitoring station. With new digital communication technology such as digital subscriber lines (DSL), voice over internet protocol (VoIP), and wireless, the signals may or may not be received correctly by an alarm monitoring station. (PRWeb November 14, 2013 ...
Nov. 14, 2013 - PRWeb