The Curitel application that was used to communicate with the CDM8900
was the one for the TX95C found at the following link:

http://www.curitel.com/english/download/pcsynch.asp

I don't have a CDM8900 and can't grab the traces for you, but this app
should at least communicate. Warning: Do not write to your phone using
this application - apparently it corrupts your phone if you do (a slight
difference in the phone book format).

Best regards,

Calvin