Hi,
If you are supposed to get the alternate greeting of the operator then check that the caller input is enabled, that the VM Ports can reach the extension you are dialing and of course that the extension is a valid extension on both CUCM and Unity, if this is a Unity subscriber you are dialing, then check that the transfer rules for this subscriber are set to transfer the caller to the extension of the user.
If you are not supposed to get the alt greeting of the operator but the 'opening greeting' when you call that should be due the operator having the same extension as the VMPilot or the number you are dialing, (and of course the operator CH should have the alt greeting enabled), OR you are matching a direct/transfer dial transfer rule, that is sending you directly to that.
I suggest to open the port status monitor and check what exactly you are matching, and what Unity is trying to do, then check the config of each CH.
Let me know if that helps.
Christian Nuche
PDI HD Team.