Motorola (GI) produced DCT 2000 series has two main models. DCT
2224 and DCT 2244.
DCT 2244 has a build in modem. The main board is the same.
There are many versions of the boards. The CPU of the board uses
Motorola
MC68331 .
The tool to debug the CPU is BDM. Each board has slightly
different design.