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Programming System Options
Dialing Restrictions and Permissions
4-21
■
To prevent dialing all telephone numbers in one exchange when a toll prefix is required, see
Table 4-1 . (The table uses exchange “976” as the example.)
■
To prevent dialing all telephone numbers in one exchange when no toll prefix is required, see
Table 4-2 . (The table uses exchange “976” as the example.)
■
To prevent international calls, enter the international prefix number,
011
.
■
To prevent the use of all star codes, enter
*
(for touch-tone telephones) and
11
(equivalent to a
*
on rotary telephones).
■
To prevent the use of a specific star code (for example,
*67
to block Caller ID information),
enter the
*
plus the 2- or 3-digit code (for touch-tone telephones) or
11
(equivalent to a
*
on rotary telephones) plus the 2- or 3-digit code.
— For touch-tone telephones, entering
*67
prevents the use of
*67
to block Caller
ID information.
— For rotary telephones, entering
1167
prevents the use of
1167
to block Caller
ID information.
■
Allowed Phone Numbers, Emergency Phone Numbers, and Marked System Speed Dial
numbers override the Disallowed List.
■
When a user dials a number that is on a Disallowed List for the user’s extension, the user
hears a reorder tone (fast busy signal) after dialing the part of the number that is stored in the
list (for example, an area code).
Table 4-1. Preventing Dialing of Numbers in One Exchange When Toll Prefix Required
Entry Restriction
976 Prevents local calls
1!!!976 Prevents direct-dial calls to all area codes
0!!!976 Prevents operator-assisted calls to all area codes
1976 Prevents direct-dial toll calls in the same area code (needed only when 0
or 1 is required for toll calls in the same area code)
0976 Prevents operator-assisted toll calls in the same area code (needed only
when 0 or 1 is required for toll calls in the same area code)
Table 4-2. Preventing Dialing of Numbers in One Exchange When No Toll Prefix Required
Entry Restriction
976 Prevents local calls
!0!976 Prevents calls to area codes with “0” as the second digit, such as 203
!1!976 Prevents calls to area codes with “1” as the second digit, such as 212