And Later) - AT&T MERLIN LEGEND Release 3.1 Maintenance And Troubleshooting Manual

Customer Support Information
In Release 3.1 and later systems, default local and default toll
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
default setting in Release 3.1 and later).
n
Deny access to pooled facility codes by removing pool dial-out
codes 70, 890-899, or any others on your system.
n
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 AT&T recommends that you
add them. Assign all voice mail port extensions to this
Disallowed List. AT&T 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 Outcalling is required by voice messaging system extensions:
n
Program an ARS Facility Restriction Level (FRL) of 2 on voice mail
port extension(s) used for Outcalling.
n
If 800 and 411 numbers are used, remove 1800, 800, 411, and
1411 from Disallowed List number 7.
A–18
Maintenance and Troubleshooting
n
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)
n
FRL 4 for international calling