My old Pace DTA faield and Comcast gave me a a DCI105COM1. It turns out to be made by Thomson, and I selected the Thomson DTA generic and it worked. I hope this post helps someone. Alos, the old Pace DC50X remote works the same with this, so I wonder if they are interchanable.
I beleive Comcast has standardized their IR codes for their DTAs. My old DC50X remote works with the new Comcast branded Thomson listed above. So if you don't have a Comcast branded DCI105 then it may use diferent codes.