Pool Dial-Out Code Restriction (Hybrid/Pbx Only); Calling Restrictions - AT&T MERLIN LEGEND Release 3.1 System Planning Manual

Telephone and Extension Features
Pool Dial-Out Code Restriction
(Hybrid/PBX Only)
This section contains instructions to tailor the use of dial-out access codes by
restricting extensions from making calls on specific trunk pools (for example,
those consisting of special-purpose lines/trunks such as WATS or FX) or to
reserve trunk pools for data communications only.
Planning Form Instructions
Use Form 6i to identify those extensions that are restricted from using some
dial-out access codes. The factory setting is for all extensions to be restricted
from using all dial-out access codes. This form only identifies extensions that
are to remain restricted. Extensions that are not listed on this form must have
their restrictions removed through system administration.

Calling Restrictions

This section contains instructions to restrict selected extensions from making
outside calls—for example, for telephones in a reception area and to control
toll-call abuse but still allow local and intercom calls.
!
SECURITY ALERT:
Calling restrictions [for example, Disallowed Lists, toll restriction, Facility
Restriction (FRL) Levels] should be programmed, as appropriate, to
minimize toll fraud abuse. Refer to the "Calling Restrictions" section in the
Feature Reference for additional information on programming calling
restrictions.
Planning Form Instructions
If these restrictions are too limited, use "Allowed Lists" and "Disallowed Lists,"
as described later in this chapter.
Use Form 6h to identify Authorization Codes for use by the users of certain
extensions. After Form 6h is filled in, remove it from the forms set and keep it in
a secure place.
Use Form 6g, Call Restriction Assignments and Lists, to identify the extensions
with calling restriction assignments. List the extensions with calling restrictions
in the Ext. No. column and the type of restriction in the Restriction Type column.
The factory setting is Restricted.
4–4
Features