INTRODUCTION
l%e Class of Service (CDS) Table determines how a port or mailbox handles calls and me&ages
and what features are added or denied. This is done 9 adding attributes to the port or mailbox
COS. Each COS may have one or more attributes. A COS may also have no attribute+
AU ports and maiboxes must have a COS assigned. Most attributes apply to mailboxes Siice only
a few attributes apply to po~B, the port C0S is primaily used for associating a SCHEDUE and
INFORMATION Table with each port.