... ,gsm security system GSM and PSTN alarm system,gsm pstn system,gsm pstn alarm system,gsm security systemSystem Features l Large ... Setup text messaging costs associated with the alarm panel.l 6 group voice alarm phone number for alert calling, 3 group ... l Telephone (phone) long-distance telephone control for arming, disarming, monitoring, remote announcement. l 1 Set of normally open signal outputs ...