3Com 3C10402B, Руководство администратора

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286 C
HAPTER
11: D
IAL
P
LAN
Some countries reserve numbers that begin with 11 for numbers of
national importance. To accommodate this requirement, you can begin
the telephone extension range at 120.
Changing Extension
Length and Ranges
You can view and change extension settings, such as extension length
and extension ranges.
If you change from a 3-digit to a 4-digit plan, import the 4-digit dial plan
configuration file
before you configure or autodiscover any devices.
To view and change extension settings:
1 Click Dial Plan > Configure .
2 Click the Settings tab.
3 Make the desired changes to the extension settings. Table 56 describes
each field.
4 Click Apply .
Planning Extension Ranges
Plan extension ranges to accommodate your present and future needs.
An extension cannot begin with a zero.
External Keyset
Prefix In Keyset mode, when a button on a 3Com Business Telephone
directly accesses an outside line, the system must check Class of
Service. The system prepends the
External Keyset Prefix value
(typically 8, 9, or 0) when it makes a call in Keyset mode.
Default Auto
Extension Default extension that the system assigns to the default Auto
Attendant. The Auto Discovery process assigns this extension.
Default menu Auto Attendant: 500
Voice mail Auto Attendant: 501
Note 1: The V3000, V3001R, and V5000 systems are shipped with a factory default
4-digit dial plan. If you import any 3-digit plan, you must manually specify any
3-digit extension ranges that are not set by the imported plan. You must also
manually change any device extensions so that they fall within the appropriate
range.
Note 2: The NBX 100 system is shipped with a factory default 3-digit dial plan. If
you import any 4-digit plan, you must manually specify any 4-digit extension ranges
that are not set by the imported plan. You must also manually change any device
extensions so that they fall within the appropriate range.
Table 56 Dial Plan Extension Settings (continued)
Field Purpose (See Notes 1 – 3)