
Chapter 24 Dialing plans 265
BCM 4.0 Networking Configuration Guide
Understanding access codes
The system uses access codes to direct calls to the correct lines and destinations. Refer to
“Creating dialing plans” on page 253 for a general overview about using access codes within the
system dialing plan.
Task:
Set up access codes for internal features:
•park prefix
• direct dial digit
Set up access codes that affect users dialing in from remote locations:
• Private Auto DN
• Public Auto DN
• Private DISA DN
• Public DISA DN
Set up access codes that affect calls coming in over the private network:
• Private access code
• Local access code
• National access code
• Special access code
Set up access codes that affect calls leaving the system:
• External code (ATA and analog devices)
• Line pool access codes
• Destination codes
• Carrier codes
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