3Com 3C10402B Administrator's Manual page 285

Table 56 Dial Plan Extension Settings (continued)
Field Purpose (See Notes 1 – 3)
Default Auto Default extension that the system assigns to the default Auto
Attendant Attendant. The Auto Discovery process assigns this extension.
Extensions
The system must direct each call coming in on an external line to
an extension. During the Auto Discovery of external lines
(analog lines and Digital Line Card channels), the system assigns
the default extension (500) as the Auto Attendant extension.
After you import the dial plan configuration file and complete
the Auto Discovery process, you can manually configure the
extension for each analog line and each Digital Line Card
channel.
For both 3-digit and 4-digit dial plans:
■
■
Hunt Group The range of extensions for hunt groups.
Extensions
■
■
External The range of extensions that are connected to external devices,
Extensions such as Analog Line Card ports, Digital Line Card ports (BRI-S/T,
T1, E1, ISDN PRI), Call Park, and Paging extensions.
Default:
■
■
Call Park The range of extensions for Call Park. This feature allows the
Extensions Range telephone user to park a telephone call temporarily and then
pick it up at a different telephone. Call Park extensions must be
a subset of external extensions.
■
■
Start External The system assigns extensions to external devices it
Discovery At autodiscovers, starting with this number and incrementing
upward. If the system reaches the highest extension, it starts
searching from the beginning of the external range and selects
the first unused one.
Typically, systems do not use all of the available external
extensions from 600–799 in a 3-digit dial plan or from
6000–7999 in a 4-digit dial plan.
Default:
■
■
Extension 500 is reserved as the default Auto Attendant.
Extension 501 is reserved as the voice mail Auto Attendant.
4-digit dial plan: 4000–4099
3-digit dial plan: 450–499
4-digit dial plan: 6000–7999
3-digit dial plan: 600–799
4-digit dial plan: 6000–7999
3-digit dial plan: 600–799
4-digit dial plan: 7250
3-digit dial plan: 750
Managing Extensions 285