Which CD changer for TravelPilot EX?

Which CD changers are compatible with the TravelPilot EX navigation system (= Blaupunkt) in a Ford Focus Ghia (business pack)?
Can the Blaupunkt CDC-A 03 be used with the TravelPilot EX?
The Blaupunkt web-sites do not seem to offer a clear answer. What it all appears to boil down to is whether the TravelPilot EX has s.c. DMS (ie. "CD-Wechsler-Stueuerung").
Thanks for any help.
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