Avaya Communication Manager Administrator's Manual page 296

Routing Outgoing Calls
Restricted area codes and prefixes
Certain area code numbers are set aside in the North American Numbering Plan. These
numbers are 200, 300, 400, 500, 600, 700, 800, 877, 888, 900. You need to specifically deny
calls made to area codes 200 through 900 (except 800 and 888).
You can also deny access to the 976 prefix, which is set aside in each area code for pay-per call
services, if you do not want to incur charges. You can block 976 or any other prefix in all NPAs
with a single entry in the digit analysis table. See
information.
Instructions
Set the 200 area code apart from other area codes 201 through 209. We use the digit analysis
table 120 because it defines long distance calls that begin with 1 and all area codes from 200
through 209.
To deny long distance calls to the 200 area code:
1. Type change ars analysis 120. Press Enter.
The ARS Digit Analysis Table screen beginning with 120 appears.
Figure 118: ARS Digit Analysis Table screen
120__________________11
1200_________________11_ 11____ deny
The table in this example shows 2 translations for calls that begin with 120.
First, follow the routing for a long-distance call that begins with 120 and is allowed. The 120
translation handles all dial strings 1-201 through 1-209, and there are many matches.
A user dials 9 120 plus 8 digits (the first of the 8 digits is not 0).
●
Communication Manager drops the ARS FAC (9 in our example), looks at the ARS Digit
●
Analysis Table for 120, and analyzes the number. It determines the call is long-distance
and sends the call over route pattern 4.
Now we will follow a call that begins with the restricted area code 200. Only one string matches
this translation.
A user dials 9 1200 plus 7 digits.
●
Communication Manager drops the ARS FAC (9), and looks at the ARS Digit Analysis
●
Table for 1200. It determines that the call type is deny, and the call does not go through.
296 Administrator Guide for Avaya Communication Manager
ARS DIGIT ANALYSIS TABLE
Dialed Total
String Min Max
11
Using wild cards
Location: all
Route Call Node
Pattern Type Num
4 fnpa ___
fnpa ___
on page 297 for more
Percent Full: 6
ANI
Req
n
n