Fixed - Caller ID notification on TV not working

There are several forum reports that the caller ID TV screen notification has stopped working after changes made to Xfinity's Triple Play package.  After 2 chat sessions, 1 call and an on-site tech call, I finally got it working!  There is a field on your Xfinity account info that requires a "coding" to enable caller ID.  Sometimes, when changes are made to your account, this field in inadvertently left blank.