Nortel BCM 3.7, Manual

Page: 320 / 1004

320 Understanding access codes
N0008589 3.3
Understanding access codes
The system uses access codes to direct calls to the correct lines and destinations. If the codes
conflict, some of the features on the system do not work. Refer to
“Creating numbering plans”
on page 206
for a general overview about using access codes within the system dialing plan.
The table of default settings shown in the following table can help you plan your access codes so
there are no conflicts.
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
Table 55 Default codes table
Digit Use System screen
0 direct dial digit Access codes
1 park prefix Access codes
2XX first digit of DNs/DN lengths Set through Quick Start Wizard
9 line pool A access code
(Takes precedence over the External line access code if
there is a conflict.)
Access codes