3Com NBX 100 Administrator's Manual - page 61
Managing Extensions
61
Telephones and Line Card ports reserve most of the extensions within the
system. However, there are other extensions within the system.
Table 8
shows the default extension ranges for 3-digit and 4-digit dial plans.
Modifying Extensions
You can modify the extension number of any device in the system.
Normally, you make changes only after you have changed the extension
ranges for the NBX system, in order to align the extensions with the new
ranges.
CAUTION: Be very careful when you change extensions. The system does
not validate changes that you make here, and there is no Undo or Cancel
function. A mistake can compromise the operation of the system.
To modify extensions:
1 From the NBX NetSet main menu, click Dial Plan > Operations > Modify
Extensions to open the Modify Extensions dialog box.
2 In the extensions list, select the extensions that you want to modify. Use
Shift-click to select a block of extensions or Ctrl-click to select several
extensions at different locations in the list.
3 Select an operation from the Operation drop-down list.
Table 11
lists and
describes the operations.
4 Make the appropriate entry in the text box to the right of the Operation
list. The system uses this number in conjunction with the operation that
you selected in step 3. For examples, see
“Changing Extensions”
below.
5 Click Apply. If the requested change creates a duplicate extension or an
extension of zero length, the change is discarded.
6 Click OK to enable your changes and exit the dialog box.
Table 11 Modify Extension Operations
Operation
Purpose
Change Extension
Modifies the first selected extension. Change Extension
applies to only one extension at a time. If you select multiple
extensions, the NBX system changes only the first extension
that you selected.
Prepend
Prepends the digits in front of all selected extensions.
Append
Appends the digits to the end of all selected extensions.
Strip Leading Digits
Strips (removes) the specified number of digits from the
beginning of all selected extensions.