I have a 3300 I am just about ready to deploy. I have the trunks set to be answered by voice mail hunt group. The operator mailbox is set as transfer only and the extension is the number of a hunt group. The hunt group members are button assignments on a 5140. Which all works without a hitch. When a call comes in, if they press zero or it times out it goes to the 5140. I find that a 5140 or 5025 with a pkm48 is a better solution than an attendant console, in smaller facilities.
When I change the operator's mailbox from transfer only to menu node. Now if you press Zero or it times out the response is "I'm Sorry but no one is available to take your call." My menu choices work except zero and I can still dial an extension. I tried extension number blank, zero and the hunt group all of them worked the same. I even tried setting up another voice mailbox and set it as transfer only, that failed also. What did I miss?