I am cancelling my ADT service soon. What should I do before I cancel the service so that I can still use the equipment without the monitoring? I read that ADT can lock out the system. I have a DSC Impassa 3G2075. I read that I should change the installer code and change the number it dials. I know the installer code. How do I change it? How do I change the dialing number?
Thanks for your help.

 

I just disconnected the phone access to the system before I cancelled, the system still worked fine without their monitoring.

 

Assuming that you have a vista 20p: in programming, delete the dialer phone numbers by entering *41*, *42* & *94*.

Since you are using the 3G communicator, they actually can't dial into the system to do a remote lock out; but deleting those numbers will make absolutely sure, and will eliminate the failure to communicate trouble on the alarm control.

http://www.nationwidesecuritycorp.co...all-Manual.pdf

 

I have the DSC Impassa 3G2075. In programming, how do I delete the numbers?

 

Your DSC unit is the communicator. The programming you need to change is in the alarm panel.

The alarm panel should be in a metal box with the battery and the bulk of the wiring.
Look closely.... the board should have an ID on it or possibly on a paper tag on the door.

 

Sorry, it's so unusual for ADT installs to use anything other than the Honeywell Vista panels, that I blinked and missed your panel being a DSC Impassa 3G2075.

What you really have is a DSC Impassa 9057 with a 3G2075 cellular communicator module, and probably ADT branded. It's something of a customized install.

Installation manual: http://cms.dsc.com/download.php?t=1&id=17242

Manual for cell module: http://cms.dsc.com/download.php?t=1&id=23233

Normally, for a DSC panel, you disable the communicator by going into programming with *8 [installer code] 380 and turn OFF option 1. With the cell module, you may also have to unplug the cable that connects the cellular card to the main alarm board.