Lucent Technologies MERLIN LEGEND Release 6.1 System Manager's Manual page 186

MERLIN LEGEND Communications System Release 6.1
System Manager's Guide 555-661-118
4 Features and Applications
Features
Table 4–11. Facility Restriction Levels
Extension FRL
0
0
1
1
2
2
3
3
4
4
5
5
6
In Release 3.1 and later systems, default FRLs help system managers guard
against toll fraud. These restrictions are automatically applied to routes, voice
messaging ports, and to the barrier codes of remote access users, as follows:
Routes. The default FRL is 2 for default local routes, so system managers
can easily change an extension default of 3 to 2 or lower in order to restrict
calling. No adjustment to the route FRL is required.
Voice Messaging Ports. The default FRL is 0, restricting all outcalling.
Barrier Codes. The default FRL is 0, restricting all but inside calls.
!
SECURITYlALERT:
The MERLIN LEGEND Communications System ships with ARS activated
with all extensions set to Facility Restriction Level 3, allowing all
international calling. To prevent toll fraud, ARS Facility Restriction Levels
(FRLs) should be established using:
Route FRL
0 only
1 and up
0 and 1
2 and up
0–2
3 and up
0–3
4 and up
0–4
5 and up
0–5
6
Any
FRL 0 for restriction to inside calls only
FRL 2 for restriction to local calls 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)
Allowed
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
Issue 1
August 1998
Page 4-49