6. Using Additional Features576-20-750 DBS 576 (USA), issued January 1999 73WALKING CLASS OF SERVICEWalking Class of Service (COS) allows you to use your own calling privileges atanother phone. For example, you may be allowed to make long-distance calls fromyour phone, but a phone in your company’s warehouse may be restricted from long-distance calls.To make long-distance calls from the restricted phone, you can go to that phone andenter a Walking COS code before dialing the number.Notes:• Before using this feature, a Walking Class of Service must be assigned foryour phone by the system administrator of DBS 576 dealer.• The same Walking Class of Service code may be used by more than oneextension.1. From an extension other than your own, pick up the handset or press the ON/OFF key.2. Enter the walking class of service access code (default = 87).3. Dial your extension number.4. Enter your Walking COS code.5. Press the # key.6. Access an outside line.7. Dial the phone number.The Walking COS will remain in effect until you hang up.USING DIRECTORY NUMBERSA Directory Number (DN) allows extension numbers to be used on a key basis. Thesame DN may be assigned to multiple keys on the same telephone and to keys onother telephones.When a telephone’s extension number is assigned to a key on the same telephone, itis considered a Primary Directory Number (PDN). Up to three appearances of thePDN may be assigned to keys on a key telephone. This allows for multiple calls onthe same Directory Number.When a DN is assigned to an FF key on another telephone, it is considered a Non-Primary Directory Number (NPDN). Up to three NPDN appearances of the sameTo use a Walking COS code