PSTN 8 : Public Switched Telephone Network. Also know as Plain Old Telephone System, this refers to the world's collection of interconnected public telephone networks designed primarily for voice traffic
Fire Protection Association, Insurers Property Crime Research (ipcRes) guidance: Alarm signalling using the internet protocol: Part 1: An overvie, Insurers Fire Research Strategy funding scheme InFiReS, Moreton-in-Marsh Gloucestershire, UK 2006. file:///C:/Users/user/Downloads/S2%20-%20Alarm%20s ignalling%20using%20the%20internet%20protocol%20-% 20Part%201%20-%20An%20overview.pdf, (Alarm signalling using the internet protocol - Brit) {67}
