The future of Cellular Alarm Monitoring
The first thing you should understand when choosing cellular monitoring is that the 2G network in widespread use today is due to be disconnected around 2017. There is not too much information available at this time, so you should do your own research and investigate 3G compatible solutions if this is a concern for you.
DSC GPRS Communicators
DSC provide a 2G GSM network service called Connect 24 that allows the setup of the DSC range of cellular communicators like the GS3060, GS2060, GS2065 and Tl265GS. YourAlarm.com can arrange everything for you and setup your DSC GPRS communicator remotely.

AlarmNet GSM
The AlarmNet-GSM platform is also based on 2G and it is the network of choice for the majority of users of Ademco Honeywell alarm control panels.
CellAlarm GSM
The CellAlarm-GSM is a universal cellular terminal that allows any make and model of alarm panel to communicate in any alarm format to any Alarm Monitoring receiver in the world.
This flexibility and the fact that customers are allowed to use their own SIM card makes it one of the most popular cellular alarm monitoring devices on the market today.