Override Mailbox Category (Override MB Ctg) Use this option to specify the category of the mailbox where Automated Attendant calls should route when you enable Answer Schedule Override. • If the Override Mailbox is a Subscriber Mailbox, the outside caller hears the mailbox greeting (if recorded) and can leave a message. Program 47 • If the Override Mailbox is a Master Mailbox, the outside caller shears the recorded announcement. Depending on how the Announcement Mailbox is programmed, InMail then hangs up, reroutes the call, or provides additional dialing options. • If the Override Mailbox is a Routing Mailbox, the outside caller hears the instruction menu and can dial any option allowed by the associated Dial Action Table.If any of the Input Data values are entered, the terminal displays the Override Mailbox Number selection (below). Override Mailbox Number (Override MB Num) Use this option to specify the mailbox where Automated Attendant calls should route when you enable Answer Schedule Override. The mailbox number you select in this option should match the mailbox category specified in 47-11-02 : Override Mailbox Category above.