AT&T MERLIN LEGEND Release 3.1 System Planning Manual page 92

Selecting Line/Trunk Options
7. For Class of Restriction without Barrier Codes on Form 3a (page 3),
complete the DID and Tie Trunks and Non-Tie Trunks sections as follows:
a. For Restriction, check one of the following three boxes: Unrestricted,
Outward Restrict (to keep the factory setting), or Toll Restrict.
b. Under the Allowed List Access and Disallowed List Access headings,
check the boxes if you plan to assign these lists.
NOTE:
Instructions for filling in the ARS Restriction Level and Allowed and
Disallowed List numbers are included in Chapter 4, "Features."
8. Form 3a (page 4) identifies programming information for four barrier
codes. If more barrier codes are planned, make the appropriate number
of copies of Form 3a, page 4. A maximum of 16 barrier codes is allowed.
!
For Class of Restriction with Barrier Codes on Form 3a (page 4), do the
following for each barrier code:
a. Write the barrier code number in the space provided, numbering them
sequentially beginning with
b. Write the 4- to 11-digit barrier code in the Digits space. The star is
added to the end of the barrier code. For security reasons, you may
want to record the code elsewhere.
c. For Restriction, check one of the following three boxes: Unrestricted,
Outward Restrict (to keep the factory setting), or Toll Restrict.
d. Under the Allowed List Access and Disallowed List Access headings,
check the boxes if you plan to assign these lists.
NOTE:
Instructions for filling in the ARS Restriction Level and Allowed and
Disallowed List numbers are included in Chapter 4, "Features."
Proceed to the next section, "DS1 Connectivity (100D Module)."
3–20
Lines/Trunks
!
SECURITY ALERT:
It is recommended that Outward Restrict be set at all times,
otherwise toll fraud can occur.
SECURITY ALERT:
Barrier codes of at least 11-digits should be assigned to help
prevent toll fraud.
1 .