Lucent Technologies 5 manual Only Yes

MERLIN LEGEND Communications System Release 5.0	Issue 1
System Manager’s Guide 555-650-118	June 1997

4Features and Applications

Features Page 4-45

In conjunction with FRLs assigned to routes, FRLs from 0 to 6 are also assigned to extensions and are used to determine whether callers have permission to use the routes. For an extension, 0 is the most restricted and 6 is the least restricted.

To use a route, the extension must have an FRL equal to or greater than the route’s FRL. In other words, an extension with an FRL of 0 has the fewest ARS privileges (routes with levels 1 through 6 cannot be used), and an extension with an FRL of 6 has the most privileges (any route may be used). Table 4–11 shows some examples.

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

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.