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4 Programming System Features
Dialing Restrictions and Permissions 49
Quick Reference Guide
SECURITY ALERT:
While procedures that restrict dialing are very effective, absolute
protection against misuse cannot be guaranteed. System
telephones give you more protection against such misuse than
single-line telephones. Therefore, you should install system
telephones where restricting telephone use is important.
Allowed Phone Number Lists (#407)
Use this feature to specify telephone numbers that users can dial regardless of
other dialing restrictions, as long as they have access to an outside line. For
example, if you restrict an entire category of calls through Disallowed Phone
Number Lists (#404), you can permit calls to a specific number in that category
by placing that number on an Allowed Phone Number List.
You can create up to eight Allowed Phone Number Lists of up to 10 telephone
numbers each. An Allowed Phone Number can be up to 12 digits long and may
include 0–9,
#, *, and h (the wildcard character, displayed as !).
SECURITY ALERT:
If you are restricting an extension from placing long-distance
calls, do not place numbers beginning with a “0” on an Allowed
Phone Number List for the extension. Once a user is active on an
operator-assisted call, the user can avoid dialing restrictions by
asking the operator to dial restricted numbers.
To create a list of Allowed Phone Numbers:
1 Press f00ss#407 at extension
10 or 11.
2 At the List Number: prompt, enter a list number (1–8).
3 At the Entry: prompt, select a list entry (01–10).
4 At the Data- - - - - - - - - - - - prompt, enter the first telephone
number.
5 To save the telephone number in memory, press e.