Today we are discussing the alarm communication protocols. Alarm protocols are the communication protocols between alarm panel and central monitoring station (or digital alarm receiver). Currently there are several protocols including 4+2 Express, Contact ID and SIA, Contact ID protocol is the widely used and acknowledged alarm protocols.

If you want to setup the a central monitoring station for providing monitoring service to your customer, you may need find the information about how to connect these alarm systems into central monitoring station for alarm management. Yes, for the traditional alarm systems, it's very easy, but if you want to use Made-in-china alarm system for your project, then things will be complicated. 

In this article we will show you how the alarm systems connect to central monitoring station, we will focus on PSTN and GSM connection, because these two methods are widely used around the world. In addition, we will use our alarm systems and central monitoring station equipment as examples.