It's just a "model number".? CI-V has a command to query information about the radio using its model number.? That's the way the cloning software works to give you an information readout.? Of the 5 current DStar radios, each has its own model number for this use.? Varying levels of compliance on ICOM's own part (typical) exist.? Some radios do not report anything using the "Information" button in the associated cloning software.? This I would consider a firmware bug.
Mitch Winkle