Instruction manual

MERLIN LEGEND/MAGIX toll fraud
Issue 9 May 2003
6-31
If you program the route in the 6-Digit table to absorb N digits, the actual number
of digits absorbed will be as follows:
■ If the user dials an 11-digit number (including the leading “1”), ARS absorbs
N digits. For example, you program the 6-Digit table to absorb 4 digits, and
the user dials 1-732-555-1234. In this example, 4 digits are absorbed, and
555-1234 is the number that ARS sends as the dialed number to the
central office.
■ If the user dials a 10-digit number (not including the leading “1”), ARS
absorbs N-1 digits. For example, you program the 6-Digit table to absorb 4
digits, and the user dials 732-555-1234. In this example, 3 digits are
absorbed, and 555-1234 is the number that ARS sends as the dialed
number to the central office.
To configure ARS to correctly route 10- and 11-digits numbers, do the following:
■ Determine the area codes and exchanges that allow 10-digit dialing and for
which you want ARS routing based on 10-digit dialing.
■ Determine the routing you want for each area code and exchange in the
list.
■ Add the area codes and exchanges to the ARS tables:
■ If all the exchanges in an area code should be routed on the same
trunk pools, add the area code to an exchange table and to an area
code table.
■ If you want only certain exchanges in an area code routed based on
10-digit dialing, add the area code and the exchanges to a 6-digit
table.
■ When you configure a system for 10-digit dialing and a user places
an outside call preceded by the ARS dial-out code, the system
searches the 6-digit tables for area code and exchange code dialed
by the user. If a match is not found, the system does one of the
following:
■ If the user dialed a leading “1,” the system searches the area code tables. If
a match is not found in the area code tables, the call is routed by the
Default Toll table.
■ If the user did not dial a leading “1,” the system searches the exchange
tables. If a match is not found in the exchange tables, the call is routed by
the Default Local table.
****SECURITY ALERT****
A user restricted from dialing a toll number (11-digit) may be able to dial that
same number by using 10-digit dialing when a “leading 1” is not required. Correct
this situation by programming the ARS facility restriction level, the extension
restriction level, and/or the allowed/disallowed lists. In addition, because
non-matching 10-digit calls go to the Default Local table with an FRL of 2, users
with an FRL of 2 can make 10-digit long distance calls.