3Com Nbx 100 And Ss3 Nbx Administration Guide

							Managing Extensions61
To modify extensions:
1Read the Caution on the previous page. Then, on the Operations tab of 
the Dial Plan window (Figure 3
), click Modify Extensions. The Modify 
Extensions dialog box appears (Figure 10
).
Figure 10   Modify Extensions Dialog Box
2In 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.
3Select an operation from the Operation pull-down list. Table 10
 lists and 
describes the operations.
4Make 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.
5Click Apply. If the requested change creates a duplicate extension or an 
extension of zero length, the change is discarded.
6Click OK to enable your changes and exit the dialog box.
Table 10   Modify Extension Operations
OperationPurpose
Change ExtensionModifies 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. 
						

							62CHAPTER 2: DIAL PLAN
Changing Extensions
You can perform several operations through the Modify Extensions dialog 
box (Table 10
). This section describes several examples.
Example: If you select Change Extension from the Operation list, the 
system replaces the selected extension with the number you type in the 
text box.
Example: If you select Strip Leading Digits from the Operation list, and 
type the number 2 in the text box, the system strips (removes) two digits 
from the beginning of the extension.
Example: If you select extensions 1000 through 1009 and select Strip 
Tr a i l i n g  D i g i t s from the Operation list, the system does not make any 
change, because the result is a series of identical numbers (all 100).
Managing 
Extension ListsAn extension list contains NBX extension numbers that are assigned and 
dedicated to specific dial tone facilities or to specific NBX applications 
(such as voice mail, Auto Attendant, and so on), or both. You can add an 
extension list to define a subset of devices such as fax machines.
Extension lists are typically numbered upward starting at *0001 in either 
a 3-digit or 4-digit plan. By convention, the extension list number is 
preceded by an asterisk. See Table 11
 for a description of the standard 
extension lists.
CAUTION: Extension lists must not overlap.
PrependPrepends the digits in front of all selected extensions.
AppendAppends the digits to the end of all selected extensions.
Strip Leading DigitsStrips (removes) the specified number of digits from the 
beginning of all selected extensions.
Strip Trailing DigitsStrips (removes) the specified number of digits from the end 
of all selected extensions.
Table 10   Modify Extension Operations (continued)
OperationPurpose 
						

							Managing Extension Lists63
Within an extension list, you can assign a priority to each extension. 
When the system accesses an extension list, it tries to use the highest 
priority extension first. The highest priority is 1 and the lowest is 99.
For example, If the extension list contains extensions that are assigned to 
T1 channels, you can assign unique priorities to each of the extensions. 
If you instruct the system to place an outgoing call using the T1 line, 
it attempts to use the highest priority extension/channel first. If the first is 
unavailable, it tries the next highest priority extension/channel, and so on.
Table 11   Extension Lists
Extension List IDDescription
*0001Contains extension numbers assigned to Line Card ports, for 
example, TLIM ports.
Routes 1 and 2 use this list.
*0002Contains extension numbers assigned to Digital Line Card ports.
Routes 1 and 2 use this list.
*0003Contains extension numbers assigned to voice mail. 
■SuperStack 3 NBX: 6400–6499 (See Note 1)
■NBX 100: 651-662 (See Note 2)
Route 3 uses this list.
*0004Contains the extension for the attendant (that is, the person 
who monitors incoming calls). The system automatically assigns 
to this list the lowest extension found during Auto Discovery.
Route 4 uses this list.
*0005Contains extension numbers assigned to H.323 ports.
*0006Contains extension numbers assigned to Virtual Tie Lines.
*0008Contains extension numbers assigned to the 8-pool.
Note 1: The NBX 100 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.
Note 2: The Superstack 3 NBX is shipped with a 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. 
						

							64CHAPTER 2: DIAL PLAN
From the Extensions List tab of the Dial Plan window, you can perform 
these tasks:
■Adding an Extension List
■Modifying an Extension List
■Removing an Extension List
The system restricts access to any specific Analog Line Card port or Digital 
Line Card port. To directly dial the extension number that is associated 
with one of these devices, you must have diagnostic privileges. In 
addition, you cannot dial a prefix to obtain a Digital Line Card port.
Adding an
E
xtension List
To add a new extension list:
1From the Dial Plan window (Figure 3
), click the Extension Lists tab 
(Figure 11
).
Figure 11   Extension Lists Tab 
						

							Managing Extension Lists65
2Click Add. The Add Extension List dialog box appears (Figure 12).
Figure 12   Add Extension List Dialog Box
3In the List Extension text box, type the number that you want to assign to 
the new extension list. Do not select a number that is currently in use by 
the system as either an extension or as the number of an extension list.
You may use the default extension number.
4Type an asterisk preceding the extension number. By convention, the 
asterisk indicates that the number represents an extension list.
5In the Name text box, type the name that you want to assign to the new 
extension list. Names can include uppercase and lowercase alphanumeric 
characters, spaces, underscores, and dashes. 
						

							66CHAPTER 2: DIAL PLAN
6If you want calls to cycle through the extensions in the list, check the 
Cycle Extensions checkbox. Each time the system accesses the extension 
list, it uses the next extension in the list. Calls effectively progress through 
the list to balance the load of calls. If Cycle Extensions is not checked, the 
extension selection always starts from the top of the list.
If an extension in the list has a higher priority, the highest priority 
extension is used regardless of the Cycle Extension setting.
7To move an extension from Extensions not in List to Extensions in List, 
select the extension and click 
						

							Managing Extension Lists67
Modifying an
Extension ListTo modify an extension list:
1On the Extension Lists tab (Figure 11
), select an extension list.
2Click Modify. The Modify Extension List dialog box appears (Figure 13
).
Figure 13   Modify Extension List Dialog Box
3To modify the name of the Extension List, edit the contents of the Name 
text box.
If you change the name of an extension list, you invalidate any aspect 
of the dial plan that refers to the name. You must change all references 
to the extension list name in the dial plan configuration file. If you made 
your changes using an editor (as opposed to modifying the dial plan from 
within the NBX NetSet utility), you must reimport the dial plan.
4If you want calls to cycle through the extensions in the list, check the 
Cycle Extensions checkbox. Each time that the system accesses the 
extension list, it uses the next extension in the list. This arrangement 
effectively progresses through the list to balance the load of calls. If Cycle 
Extensions is not checked, the extension selection always starts from the 
top of the list.
5To add an extension to the Extensions in List scroll list, select it in the 
Extensions not in List scroll list and click the 
						

							68CHAPTER 2: DIAL PLAN
6To remove an extension from the extension list, select it the Extensions in 
List scroll list and click the >> button. The extension moves to the 
Extensions not in List scroll list.
7To change the priority of extensions:
aSelect the extension from the Extensions in List scroll list.
bEnter a priority number in the text box below the list (from a high of 
1 through a low of 99).
cClick the Change Priority in List button.
The new priority appears as the number to the left of the item within 
square brackets. The default value is 50. When the system accesses an 
extension list, it attempts to use the highest priority extension first.
8Click OK to enable your changes and exit the dialog box.
Removing an
Extension ListThe system does not let you remove an extension list that the dial plan 
is using even if that extension list is empty. You must remove the 
extension list from the dial plan before you can delete the extension list.
To remove an extension list:
1On the Extension Lists tab (Figure 11
), select the extension list you want 
to remove.
2Click Remove. A dialog box prompts you to confirm the removal.
3Click Ye s.
CAUTION: Do not remove any of the predefined lists (lists 1 through 8).
Managing 
Dial Plan TablesThe NBX system associates a normal dial plan table and a Least Cost 
Routing table with each device. Devices include, for example, telephones, 
Analog Line Card ports, or Digital Line Card ports. A telephone that has 
no table assigned does not have permission to dial. A telephone without 
an assigned table is flagged in Reports. For details, see “Generating a 
Dial Plan Report” earlier in this chapter.
For more information, see these topics:
■Determining Which Devices Use Dial Plan Tables
■Removing a Dial Plan Table 
						

							Managing Dial Plan Tables69
Determining Which
Devices Use
Dial Plan TablesYou can view or change the devices associated with a particular dial plan:
1In the NBX NetSet – Main Menu window, click Dial Plan. The Dial Plan 
window appears, displaying the Operations tab (Figure 3
).
2Click the Ta b l e s tab (Figure 14
).
Figure 14   Ta b l e s  Ta b
3From the list, select a dial plan table for which you want to list associated 
devices. To list devices not assigned to any table, select (none).
4Click Devices Using. The Devices Using Dial Plan dialog box appears 
(Figure 15
). For a description of the field definitions, see Table 12 at the 
end of this section. If you select (none), the Devices That Have No Dial 
Plan dialog box appears.  
						

							70CHAPTER 2: DIAL PLAN
Figure 15   Devices Using Dial Plan Dialog Box
5Select Normal to see which devices use table ID 1 (in this example) as the 
Normal table.
6Click Least Cost to see which devices use table ID 1 (in this example) as 
the Least Cost table.
Each device can use only one normal and one least cost table.
7To move a device to the Devices Using Table list, select it in the Devices 
Not Using Table list and click .
8Click Close.
Table 12   Devices Using Dial Plan Table Fields
FieldPurpose
Dial Plan Table IDThe identification number of the dial plan table as 
specified in the dial plan configuration file.
Dial Plan Table NameThe name of the dial plan table.
Table UsageThe type of table (either Normal or Least Cost). To select 
a type, click either Normal or Least Cost.
Devices Using TableA list of devices using this Normal or Least Cost 
Routing table.
Devices Not Using TableA list of devices not using this Normal or Least Cost 
Routing table.