Lucent Technologies PARTNER Advanced Communications System Programming And Use Instructions page 225

Specific Telephone Numbers. Enter the phone number exactly as you
would dial it. For example, to prevent calls to the local number 555-5678,
press
All Telephone Numbers in One Area Code. The following list entries
prevent calls to the 900 area code:
— Toll Call Prefix required
1900 and 0900
— Toll Call Prefix not required
900 and 0900
All Telephone Numbers in One Exchange. The following entries prevent
calls to the 976 exchange:
— Toll Call Prefix required
976
1!!!976
0!!!976
1976
0976
— Toll Call Prefix not required
976
!0!976
!1!976
International Long Distance. To prevent international calls, enter the
international prefix number, 011.
All Star Codes. To prevent the use of all star codes, enter * (for touch-tone
phones) and 11 (equivalent to a * on rotary phones).
5-110
Feature Reference
5 5 5 5 6 7 8
.
Prevents local calls
Prevents direct-dial calls to all area codes
Prevents operator-assisted calls to all area
codes
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)
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)
Prevents local calls
Prevents calls to area codes with "0" as the
second digit, such as 203
Prevents calls to area codes with "1" as the
second digit, such as 212