3Com Nbx 100 And Ss3 Nbx Administration Guide

Dial Plan Pretranslators41
Pretranslators for
Incoming CallsFor incoming calls, pretranslation reformats the dialed number before it is 
passed to the Incoming dial plan table (Table ID 2). See “Incoming Dial 
Plan Table” later in this chapter.
Incoming Pretranslator Example 1
If, for an incoming telephone call, the telephone company passes you 
4-digit numbers from 6100 through 6199, the system can use a 
pretranslator to remove the first digit; the remaining 3 digits can then be 
used as internal...

42CHAPTER 2: DIAL PLAN
Pretranslator Example 3
Assume that the telephone company passes 4-digit numbers to the 
system for each incoming telephone call (for example, numbers in the 
range 5200 through 5300). If the system uses 3-digit extensions in the 
range 200 through 300, you could define a single pretranslation 
operation to stripLead (remove) the first digit, for instance, the number 5 
from an incoming number such as 5278, and pass the call to extension 
278. “Sample Solutions Using Dial Plan...

Managing the Dial Plan Configuration File43
pretranslator to remove (stripLead) the first two digits from the internal 
extension number and add (prepend) the appropriate digit string. This 
pretranslator constructs the full telephone number.
Example: If you use two different long-distance carriers at different times 
of the day to save costs, you can prepend different digit sequences to the 
outgoing dialed number to select which carrier you want. If you prepend 
1010321 between the time the business...

44CHAPTER 2: DIAL PLAN
Accessing the
Dial PlanTo import a dial plan configuration file and modify it, select NBX NetSet 
> Dial Plan > Operations (Figure 3
). From this tab, you can access 
customer-defined and default dial plans.
Figure 3   Dial Plan Operations Tab
Creating Dial Plan
Configuration FilesThe simplest way to create a new dial plan is to model it after an 
existing one.
1Go to the Operations tab (Figure 3
).
2Browse for a dial plan, or select one from the pull-down list.
3Click Open to open...

Managing the Dial Plan Configuration File45
You create new entries in the dial plan configuration file by typing in new 
commands (see “Dial Plan Configuration File Commands” 
later in this 
chapter) or by cutting, pasting and editing existing lines in the file.
When you cut and paste new lines into dial plan tables, be sure to change 
the Entry number in the pasted line. If two or more lines have the same 
Entry number, the NBX system replaces the first one with the second; 
therefore, only the last one...

46CHAPTER 2: DIAL PLAN
To import a default dial plan configuration file:
1In the NBX NetSet – Main Menu window, click Dial Plan. The Dial Plan 
window appears, displaying the Operations tab (Figure 3
).
2Click the 
Default File radio button. From the Default File pull-down list, 
select the default file that you want to use.
3Click 
Import.
4Reboot the system.
CAUTION:When you import a dial plan configuration file, the 
NBX system immediately implements the dial plan. You are always 
warned that the...

Managing the Dial Plan Configuration File47
International Dial Plan Issues
Several international dial plan issues warrant attention. See these topics:
Customizing an International Dial Plan.If there is no customized 
dial plan for your country, you may need to modify the default dial plan. 
See “Modifying a Dial Plan Configuration File”
 later in this chapter.
If you make changes to the default dial plan, you can test them by 
making a simulated call. See “Testing a Dial Plan”
 later in this chapter....

48CHAPTER 2: DIAL PLAN
CAUTION:When you import a dial plan configuration file, the 
NBX system immediately implements the dial plan. You are always 
warned that the system may become inoperative. The system becomes 
inoperative only if you have manually modified a dial plan and have 
made syntax or content errors. Carefully check any changes that you 
make to the configuration file before you import them.
Exporting
(Saving) a Dial Plan
Configuration FileWhen you export (save) the current configuration,...

Managing the Dial Plan Configuration File49
4From the list box at the top of the Save As window, select the destination 
folder.
5In the File Name text box, replace the default file name with a new name.
The sample default files include examples of such things as timed routes 
and pretranslators. Verify that you rename the new configuration file with 
a unique file name so that you do not overwrite the sample default file.
6Click Save.
Testing a Dial PlanThis section describes how to test the currently...

50CHAPTER 2: DIAL PLAN
business hours (to confirm that you can make toll calls from that 
extension) and during closed hours and weekends (to confirm that the 
system prevents such calls).
To create and run a test using the currently loaded dial plan:
1In the NBX NetSet – Main Menu window, click Dial Plan. The Dial Plan 
window appears, displaying the Operations tab (Figure 3
).
2Click 
Te s t. The Te s t Dial Plan dialog box appears (Figure 5).
Figure 5   Test Dial Plan Dialog Box
3To set up the...