Instruction manual

Features
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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.
Table 4–
11. Facility Restriction Levels
Extension FRL Route FRL Allowed
0 0 only Yes
0 1 and up No
1 0 and 1 Yes
1 2 and up No
2 0–2 Yes
2 3 and up No
3 0–3 Yes
3 4 and up No
4 0–4 Yes
4 5 and up No
5 0–5 Yes
5 6 No
6 Any Yes
!
SECURITY ALERT:
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:
■
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)
■
FRL 4 for international calling
Each extension should be assigned the appropriate FRL to match its
calling requirement. All voice mail port extensions and barrier codes
not used for outcalling should be assigned to FRL 0 (the default
setting in Release 3.1 and later).
Features and Applications 4–41