Will T-Type sets work with 6x16 system with dr-5 software

yes, but you will miss a few features. are they standard T-series, or enhanced T-series.

Thanks Z-Man for the help

These are standard t_type

the LED does do mwl, but other than that you should be fine.

I could be wrong, but on that level of software I think the T-series phones will actually emulate a M-series phone.