[Kroupware] Sharing calendar info (free/busy) between Kolab Server and Exchan ge Server

[SNOW, MICHAEL (SBCSI)]

"It depends on what you understand by "sharing".
Kolab Clients can use the Freebusy list and invite people
by email that using Outlook/Exchange."

What I'm asking is if during a migration from one platform to another (in
this case, Exchange Server to Kolab Server), can the users using Outlook
client connecting to an Exchange server (via MAPI) see free/busy information
of those on the Kolab server.  Of course, then the question is can users
using Outlook client to connect to the Kolab server see free/busy info of
those users still on Exchange Server?  If so, is there a protocol
requirement for the Outlook client to use when connecting to the Kolab
server?

Thanks so much for your time.