I have setup a second call handler and routing rules to play a different greeting with menu options when a specific number calls our corporate office.
It works to the point that you can press option one and the phone will ring in department A. or press option 2 and subscriber B phone will ring.
The problem is that if the phone is not answered, instead of going to the department or subsciber voicemail it goes back to the greeting message. I copied all the settings (except for the caller input settings from our "Opening Greeting" call handler which works fine.
The only difference I see is that in the "Routing Rules" tables the "Type" of the new Route entry is "Forwarded" and the "Opening Greeting" has a "Type" of "System".