I have an alarm system (DSC PowerSeries 8-64 Zone) that i bought lately. The sales rep told me that there is an add-on that you could buy that will text you when the alarm is triggered. This is when the alarm bells went of for my first Ardruino project. No this board has a couple of terminals (Tip, Ring, T1 and R1), where the GSM module connects to it. But now the problem is i dont know what Tip and Ring is for or what protocol it uses for communication?
Any help would be greatly appreciated.