AT&T MERLIN LEGEND Release 3.1 System Planning Manual page 176

System Features
Planning Form Instructions
On Form 6f:
1. Write the name of the list in the space next to the list number.
2. Write the disallowed area codes, exchanges, and/or star codes in the
spaces provided (a maximum of 10 entries for each list). Use the wild
card character ("p") to restrict an exchange from being dialed in any
area code. For example, to prevent users from directly dialing the 976
exchange in any area code, write
NOTE:
On Form 6f (page 3), Disallowed List #7 contains default entries (as
shown in Table 4-2 above) and is the system default disallowed list. To
change the entries in this list, cross out the default entry and write the
new values in the space provided.
3. Write the extension numbers of the telephones that you want to assign to
the list in the Disallow to Ext. Nos. column (see Form 2a).
4. Disallowed List Class of Restriction assignments apply to all remote
access users and cannot be assigned on an individual basis. Use Form
3a, Incoming Trunks: Remote Access, if you planned Remote Access
and want to restrict callers through Disallowed Lists:
a. On Form 3a (page 3), in the Class of Restriction without Barrier Codes
section, write the list numbers under the Disallowed List Access
heading for either or both tie and non-tie trunks.
b. On all copies of Form 3a (page 4), Class of Restriction with Barrier
Codes, write the list numbers under the Disallowed List Access
heading for each barrier code.
!
SECURITY ALERT:
To help prevent toll fraud, barrier codes should always be
assigned and should also be the maximum length allowed.
1 p p p 9 7 6 .
4–41
Features