AT&T 3 manual Description, Class of Service COS

Mailbox

Description

The System Administrator’s Mailbox and the General mailboxes are factory-set. You, the System Administrator, must create all other mailboxes.

Security Alert:

For security reasons, the mail system will not transfer a call to any destination that does not have a mailbox. Therefore, you must create a mailbox for every extension, Hunt Group, and Calling Group that callers need to reach from the mail system.

There are two exceptions:

■The extension designated as the Call Answer Service Operator is not required to have a mailbox.

■The extensions or Hunt Groups designated as Fax Extensions should not have mailboxes.

To prevent possible toll fraud abuse, mailboxes should exist only when they are needed. That means that they should be created only as they are needed, and that they should be deleted when they are no longer needed.

Class of Service (COS)

You must assign a Class of Service to each mailbox that you create. Table 5-1summarizes the characteristics associated with each Class of Service. An explanation of each characteristic follows the table.

Mailbox 5-83