I’m wondering the same. I have the system setup at the house now but want to move away from it. The contact sensors they use are from Visonic (model MCT-320 SMA).
correct - this is the same as the system that xfinity home uses.
All their equipment is based on the zigbee protocol and uses the icontrol hub as the central control unit.
Update: I was not able to get any of my TWC stuff to work after I disconnected their system. The MCT-320 does not appear to be compatible with SmartThings.