Will IPCC Express 4.0 with HA function with only SQL MSDE installed??

Will high availability work in IPCC Express 4.0 with SQL MSDE only installed??

We have Unity 4.0.4, the primary server is up with all the licenses installed and the failover wizard ran and passed successfully. The secondary server was up and running but after we ran the failover wizard and it failed at SQL Replication, unity i...

I have a subscriber who wants to be listed in the directory but wants the calls to go to his secretary's phone,not his, how can I do this?

Is is normal for the MWI's NOT to work when the Exchange Message Store is down/offline?? Our UMR is working and taking messages but the MWI's do not light therefore users do not know they have new voicemail.