Lucent Technologies MERLIN LEGEND Release 6.1 Maintenance And Troubleshooting Manual page 342

MERLIN LEGEND Communications System Release 6.1
Maintenance and Troubleshooting 555-661-140
Toll Fraud Prevention
FRL 0 for restriction to internal dialing only
FRL 2 for restriction to local private network calling only
FRL 3 for restriction to domestic long distance (excluding area
code 809 for the Dominican Republic as this is part of the North
American Numbering Plan, unless 809 is required)
FRL 4 for international calling
In Release 3.1 and later systems, default local tables are
factory-assigned an FRL of 2. This simplifies the task of restricting
extensions: the FRL for an extension merely needs to be changed
from the default of 3.
Each extension should be assigned the appropriate FRL to match
its calling requirements. All voice mail port extensions not used
for Outcalling should be assigned to FRL 0 (the factory setting in
Release 3.1 and later).
Deny access to pooled facility codes by removing pool dial-out codes
70, 890-899, or any others on your system.
Create a Disallowed List or use the pre-prepared Disallowed List
number 7 (Release 3.1 and later systems only) to disallow dialing 0, 11,
10, 1700, 1809, 1900, and 976 or 1(wildcard)976. In Release 3.1 and
later systems, Disallowed List number 7 does not include 800 and 1800
and 411 and 1411, but Lucent Technologies recommends that you add
them. Assign all voice mail port extensions to this Disallowed List.
Lucent Technologies recommends assigning Disallowed List number 7.
This is an added layer of security, in case outward restriction is
inadvertently removed. (In Release 3.1 and later systems, voice
messaging ports are assigned by default to Disallowed List number 7.)
If your system is part of a private network, assign Disallowed List 7 to
Remote Access.
If Outcalling is required by voice messaging system extensions:
Issue 1
August 1998
Page A-16