Administrator's Guide

Modifying call routing
Issue 5 October 2002 263555-233-506
4. Move to a blank Dialed String field.
If the dialed string is already defined in your system, the cursor appears in
the appropriate Dialed String field, where you can make changes.
5. Enter
1650 in the Dialed String field.
6. Enter the minimum and maximum values from step 2 in the Total Mn and
Total Mx fields.
In our example, enter
11 in each field.
7. Enter the route pattern from step 2 in the Route Pattern field.
In our example, enter
30.
8. Enter
fnpa in the Call Type field.
9. Enter the node number from step 2 in the Node Num field.
For our example, leave the node number blank.
10. Press
ENTER to save your changes.
To add a new prefix, follow the same directions, except use a shorter dial string
(such as
list ars route-chosen 2223333, where 222 is the old prefix) and a dial
type of
hnpa.
Tip:
If you change an existing area code for a network with multiple locations, be
sure to change the Number Plan Area Code field on the Locations screen.
See ‘‘Setting up multiple locations’’ on page 257.
Using ARS to restrict outgoing calls
ARS allows you to block outgoing calls to specific dialed strings. For example,
you can restrict users from making international calls to countries where you do
not do business, or in the U.S. you can restrict access to 900 and 976 pay-per-call
numbers.
!
SECURITY ALERT:
To prevent toll fraud, deny calls to countries where you do not do business.
The following countries are currently concerns for fraudulent calling.
country code country code
Colombia 57 Pakistan 92
Ivory Coast 225 Peru 51
Mali 23 Senegal 221
Nigeria 234 Yemen 967