AT&T Security Systems Frequently Asked Questions

How Does Dual Path Monitoring Work on a 2GIG GC3?
When Dual Path communication is enabled on the GC3, it sends all signals meant for the monitoring station via both paths simultaneously. Alarm.com acknowledges and forwards whichever signal is received first, and ignores the duplicate. This ensures that the fastest path available is always used.
Added:

Can WIFI be Primary with Cellular as Backup on a 2GIG GC3?
When WIFI is available on the GC3, signals are sent via both WIFI and Cellular. Alarm.com acknowledges whichever is received first, forwards that signal to the monitoring station, and ignores subsequent signals. This way, signals always use the fastest path available for communication.
Added:

What Happens to a Qolsys IQ Panel 2 When the Internet Goes Down?
A Qolsys IQ Panel 2 will appear unaffected when the internet goes down, as this connection is not supervised by the panel. This is because the system requires cellular communication for monitoring and remote services. The WIFI connection is more for convenience. Read on to find out more.
Added:

How Do I Register the 3GL Cellular Module on an L5200?
To register the 3GL cellular module on an L5200, you must contact your alarm monitoring company and provide them with the MAC and CRC of the communicator.
Added:

How Do I Replace a L5100's GSMVLP5-4G Cellular Module?
In order to replace a GSMVLP5-4G in an L5100, you will need to take out the old cellular communicator and then install and register the new communicator.
Added:

How Do I Make My Honeywell L5200 Work w/ AlarmNet 360?
The Honeywell L5200 will need a communicator installed to be able to work with AlarmNet 360. The learn how an alarm company can register the panel, read on.
Added:

Can External Antenna be Installed on an iGSMV4G?
An external antenna can be installed into an iGSMV4G. The communicator's internal antenna must be removed, and a K14207LF adapter will needed for the install.
Added:

How Can I Connect Wirelessly to a 2GIG GC3 with an iPad?
An iPad can connect wirelessly to a 2GIG GC3 system with the downloadable Alarm.com app. Learn how to configure Alarm.com on a GC3 alarm and automation system.
Added:

Does My VISTA-21iP Support 4G Cellular Communication?
The VISTA-21iP does support 4G cellular communication with the addition of the Vista-GSM4G, or an external 4G device. Read on to see how to add 4G cellular.
Added:

Will a GSMX4G Work on a VISTA-20P With a 5.2 Revision Chipset?
The Vista-20P version 5.2 supports the GSMX4G as a communicator, and for upload/download, but does not support Total Connect 2.0. Read on to learn more.
Added: