System

The system mailbox is a special-purpose mailbox designed to either present relatively static information to the caller (such as office hours or directions) or as an aid in routing the caller to the right information or extension (or mailbox) based on what the caller is looking for—or both.

A system mailbox:

Consequently, a system mailbox is not really suitable for use as subscriber mailbox.  It is little more than a container for a greeting and a single-digit-action (SDA) menu.

The auto attendant mailbox (typically, mailbox 991) is a good example of a typical system mailbox.  At a minimum, the attendant mailbox will have a call blocking greeting and an associated SDA menu that routes callers to other places (such as the operator) or to other system features (such as a company directory).  It may also have an associated scheduled event template that determines how the mailbox behaves during a specific time period, such as during office hours versus after hours; for example, it may play different greeting and use a different SDA menu.

The subscriber menu for a system mailbox has the following options: