3Com Nbx 100 And Ss3 Nbx Administration Guide

Managing the Dial Plan Configuration File51
Figure 6   Dial Plan Test Results
Generating a
Dial Plan ReportThis section describes how to create a report containing all dial plan 
settings, tables, routes, and pretranslators. The report also performs 
a consistency check to ensure that all dial plan table entries point to valid 
routes which, in turn, point to valid extensions. The report also identifies 
how many devices are using each dial plan table and each pretranslator.
Consider these common dial...

52CHAPTER 2: DIAL PLAN
■Devices that point to nonexistent Normal tables, Least Cost Routing 
tables, or pretranslators
■Pretranslator entries that have no operations
If a telephone has no table assigned, that telephone does not have 
permission to dial. This error is flagged in Reports. If a device has only a 
Normal table, no error is reported. 
If a device has only a Least Cost table, an error is reported. The telephone 
is still usable and has permissions defined in whatever table has been 
chosen as...

Managing the Dial Plan Configuration File53
Figure 7   Dial Plan Report — Partial Dialog Box
Errors can prevent calls from being successfully routed. Warnings are 
conditions that you can easily correct to successfully route the call.
4When you are finished, click Close at the bottom of the screen.
Modifying a Dial Plan
Configuration FileThis section describes how to modify the currently loaded dial plan 
configuration file.
CAUTION:Modifications must be syntactically correct. Each time that the 
system...

54CHAPTER 2: DIAL PLAN
Figure 8   Modify Dial Plan Dialog Box — Partial Display
3Edit the dial plan configuration file. A single line of space is required 
between each dial plan entry. You can type a complete dial plan entry 
anywhere in the file.
4Click OK. The Import Confirmation dialog box prompts you to confirm 
the changes.
5Click Ye s . The system imports the modified dial plan. The Dial Plan 
Consistency dialog box appears, displaying the results of the error and 
consistency checks.
6Make a note...

Outdialing Prefix Settings55
Outdialing Prefix 
SettingsA telephone user can look up a call in the call logs (Missed Calls, 
Answered Calls, and Dialed Calls) using the telephone display panel, 
select a telephone number from any of the logs, and redial it.
To redial a number from the Missed Calls or Answered Calls list, the NBX 
system needs to know the appropriate dial prefix to prepend to the digits 
in the telephone number.
For information and examples about how to configure outdialing 
prefixes, see...

56CHAPTER 2: DIAL PLAN
Ta b l e 8 lists typical extension ranges in a 3-digit and a 4-digit dial plan. 
Ta b l e 9
 describes these ranges in more detail and gives the default ranges 
and values for 3-digit and 4-digit dial plans.
Ta b l e 8    Typical Extension Ranges for 3-digit and 4-digit Dial Plans
Extension Type3-digit (See Notes 1 and 2)4-digit (See Notes 1 and 2)
TelephonesNBX 100: 
100–449SuperStack 3 NBX: 
1000–3999
Auto Attendant500–599500, 501, plus 5500–5599
Hunt GroupNBX 100: 450–499...

Managing Extensions57
Ta b l e 9 provides a more detailed explanation of extension types, including 
default extension ranges and values for 3-digit and 4-digit dial plans.
Ta b l e 9    Dial Plan Extension Settings
FieldPurpose (See Notes 1 and 2)
Telephone 
Extensions RangeThe range of extensions for telephones.
■SuperStack 3 NBX: 1000–3999
■NBX 100: 100–449
Length — This pull-down field specifies the number of digits for 
telephone extensions. 
Auto Attendant 
Extensions RangeThe range of extensions...

58CHAPTER 2: DIAL PLAN
Some countries reserve numbers beginning with 11 for numbers of 
national importance. To accommodate this requirement, you can begin 
the telephone extension range at 120.
Call Park 
Extensions RangeThe range of extensions for Call Park. This feature allows the 
user to temporarily park a telephone call and then pick it up at a 
different telephone. Call Park extensions must be a subset of 
external extensions.
■SuperStack 3 NBX: 6000–6099
■NBX 100: 601–609
Start External...

Managing Extensions59
Changing Extension
Length and RangesYou can view and change extension settings, such as extension length 
and extension ranges.
If you are changing 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:
1On the Operations tab (Figure 3
), click Settings. The Settings dialog box 
appears (Figure 9
).
Figure 9   Settings Dialog Box
2Make the desired changes to the...

60CHAPTER 2: DIAL PLAN
Example: For a 4-digit dial plan, you can set the initial telephone 
extension range to 1000–1099. This arrangement allows for up to 100 
telephone extensions. Later, you can extend the range up to 3999 to 
allow for 400 telephone extensions. By default, the Hunt Group range 
starts at 4000 on the SuperStack 3 and 450 on the NBX 100, so you 
cannot assign telephone extensions in either of those ranges.
How Auto Discovery
Assigns ExtensionsThe Auto Discovery process assigns new...