Lucent Technologies MERLIN LEGEND 6 - Manual (Page 179)

MERLIN LEGEND Communications System Release 6.0
System Manager’s Guide
555-660-118
Issue 1
February 1998
Features and Applications
Page 4-47 Features
4
also be used to make certain calls.) Use Disallowed Lists to provide some
protection from toll abuse when no other restrictions are applied and to restrict
remote access callers. Allowed/Disallowed Lists can be used with other calling
restrictions. This feature provides flexibility by allowing users whose phones are
restricted to call specific numbers related to their business activities, as well as
emergency numbers.
Beginning with Release 3.1, star codes can be included in Allowed and
Disallowed Lists (in Releases 3.0 and earlier, the system treats star codes no
differently from other dialed digits, and you cannot include a star code in an
Allowed/Disallowed List; this can affect calling restrictions and ARS routing).
Furthermore, they are ignored by the Automatic Route Selection feature when
routing calls. Star codes, typically dialed before an outgoing call, provide special
services from the CO. For example, in many areas a telephone user can dial

before a telephone number to disable central office-supplied caller identification at
the receiving party’s telephone. To allow or disallow use of this star code
preceding a call, you include
*67 in an Allowed or Disallowed List. For each star
code, a separate list entry is required. For more information about star codes in
Allowed/Disallowed Lists, see Chapter 6, “Managing the System.”
Beginning with Release 3.1, a default Disallowed List (number 7) is provided with
the system. This Disallowed List is automatically assigned to both generic and
integrated VMI ports used by voice messaging systems. It includes the following
entries, which are often used for toll fraud:
■ 0, to prevent international calls
■ 10, to prevent access to long-distance service providers
■ 1809, to prevent unauthorized international calls routed through the
Dominican Republic
■ 1700, to prevent unauthorized toll calls with a “700” area code
■ 1900, to prevent unauthorized toll calls with a “900” area code
■ 976, to prevent local toll calls to numbers with “976” local access codes
■ 1www976, where “w” stands for a wildcard entry, to prevent long-distance
calls to numbers with “976” local access codes
■ 11, to prevent the use of star codes at single-line telephones
■ *, to prevent the use of star codes at multiline telephones
Night Service with Outward Restriction 4
Apply to: Whole system
Use with: Night Service Emergency List and Night Service Exclusion List.
Includes emergency numbers (including, for example, the number
dialed by a HotLine) that can be dialed regardless of restrictions. No
password is required.