GE panel which I think is the standard one used by ADT.
The cell back up package is ademco alarmnet. I guess that explains why he told me the cell backup cannot have ecp and ADT will get only signal for zone 1 no matter which zone is actually broken if electricity is cut off to the door alarm system. I have a battery backup that lasts for may be an hour or hour and a half. Would that be enough in case of an emergency ?