6. Using Additional FeaturesICX-35-750 ICX (International), issued March 1999 735. Press the # key.6. Access an outside line.7. Dial the phone number.The Walking TRS (Call Barring) 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 sameDN may be assigned to keys on a telephone. This allows calls to the DN to appearon multiple telephones. The calls ring in on a specified basis - immediate, delayed,or no-ring.A telephone may only have one PDN (on up to three keys) but may have multipleNPDNs with up to three appearances of any one NPDN.
