asterisk users - Aug 2005 - How to log the different extensions dialed within a single call?

Hello everyone,

 From what I understood, the CDR mechanism only keeps track of the 
origin and destination of a call.  What would you recommend if one needs 
to keep track of different extensions dialed within a single call?  Is 
there any special Asterisk application for that?

Thanks in advance for any help,

Leo