MERLIN LEGENDCommunications System Release 6.1
System Planning
555-661-112
Issue 1
August 1998
Lines/Trunks
Page 3-22Selecting Line/Trunk Options
3
c. Under the Disallowed List Access heading, check the box if you plan
to assign disallowed lists.
NOTE:
Instructions for filling in the ARS Restriction Level 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.
!
SecurityAlert:
Barrier codes of at least 11 digits should be assigned to help prevent toll
fraud.
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
1.
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 Disallowed List Access headings, check the boxes if you
plan to assign disallowed lists.
NOTE:
Instructions for filling in the ARS Restriction Level and
Disallowed List numbers are included in Chapter 4,
“Features.”
Proceed to the next section, “DS1 Connectivity (100D Module).”
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