AT&T MLS-6TM, MLS-12DTM, MLS-12TM Prevents operator-assisted in-state calls needed only when 0 or

The entries for toll calls differ, depending on the Toll Call Prefix (#402). Make sure the Toll Call Prefix is set correctly for your dialing area. If it is not, entries on the Disallowed and Allowed Phone Number Lists may not be handled correctly.

Programming Notes: To program telephone numbers, dial the number as you would normally. You can also use the "wildcard” character to stand for any digit in a phone number. For example, if you want to prevent users from making calls to area codes 202 and 212, you could enter each area code separately or com- bine them in one entry using the wildcard to stand for the middle digit. Using the wildcard, you would press [ 2 ] [ Wild ] [ 2 ] . The wildcard character appears as a “!” on the display: 2 ! 2

When you use the wildcard, be sure that you do not inadvertently prevent a call that should be allowed. In the example above, if we do not include a toll prefix (1 or 0), this entry would prevent calls to exchanges 222, 232, 242, 252, 262, 272, 282, and 292 as well as area codes 202 and 212, since the wildcard matches any digit. The examples below include normally-dialed numbers and wildcards.

■Specific Telephone Numbers. Dial the telephone number directly, followed by [ Enter ] . For example, to prevent calls to local directory assistance, press [ 4 ] [ 1 ] [ 1] [ Enter ]..

■All Telephone Numbers in One Area Code. The following lists use 900 “chat” numbers as an example of preventing calls to an area code.

■List 1 (Toll Call Prefix required)

1900 Prevents direct-dial calls to area code 900

0900 Prevents operator-assisted calls to area code 900

■List 2 (Toll Call Prefix not required)

900 Prevents all ca!ls to area code 900

■ All Telephone Numbers in One Exchange. The following lists use “976” as an example of preventing all local and long distance calls to an exchange.

■ List 1 (Toll) Call Prefix required)

976	Prevents local calls
1!0!976	Prevents direct-dial calls to area codes with “0” as the second digit
1!1!976	Prevents direct-dial calls to area codes with “1” as the second digit
0!0!976	Prevents operator-assisted calls to area codes with “0” as the
0!1!976	second digit
	Prevents operator-assisted calls to area codes with “1” as the
	second digit
1976	Prevents direct-dial in-state calls (needed only when 0 or 1 is
	required for in-state toll tails)
0976	Prevents operator-assisted in-state calls (needed only when 0 or 1
	is required for in-state toll calls)

■List 2 (Toll Call Prefix not required)

976Prevents 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 the “1” as the second digit, such as 212

■International Long Distance. To prevent international calls, enter the inter- national prefix numbers, [ 0 ] [ 1 ] [ 1 ] Enter ].

System Programming 3-21