Former AT&T Digital Life....

I've got some cameras installed through a former AT&T Digital Life installation. Now I am automating using my Alexa and Aeotec hub. I've got all but a few proprietary devices connected to the hub, but I still have two cameras, assuming they don't utilize ZWave or Zigbee, that I would like to access: a motion sensor indoor camera and an outside camera. Any ideas on how to access them or get them included in my new hub?