Instruction manual

Page 1327 of 3156
Features and Services
Directory Number Expansion
Contents
The following are the topics in this section:
Feature description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1327
Operating parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1328
Feature interactions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1329
Feature packaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1332
Feature implementation . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1332
Feature operation . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1332
Reference list
The following are the references in this section:
• ISDN PRI/BRI: Feature Description and Administration (553-2901-301)
Feature description
This feature increases the number of digits allowed for internal Directory
Numbers (DNs), from a maximum of four digits per DN to seven digits per
DN. The following internal DNs have been expanded:
• Single-line telephone DNs
• Multi-line telephone DNs
• Trunk Group Access codes
• Attendant DNs (including local attendant in Centralized Attendant
Service)
• Listed Directory Numbers (LDNs)