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MERLIN LEGEND Communications System Release 6.0
System Programming
555-660-111
Issue 1
February 1998
Programming Basics
Page 1-61Product Enhancements
1
Release 3.1 Enhancements 1
Release 3.1 includes all Release 3.0 functionality plus the enhancements listed
below.
Security Features 1
New security features include a variety of components. Additional details are
included elsewhere in this book.
Call Restriction Checking for Star Codes 1
The system manager can add star (*) codes to Allowed and Disallowed Lists to
help prevent toll fraud. Star codes, typically dialed before an outgoing call, enable
telephone users to obtain special services provided by the central office (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. (You must contract with your telephone service provider to have
these codes activated.)
When users dial star codes, the MERLIN LEGEND Communications System’s
Calling Restrictions determine whether the codes are allowed. If allowed, the
system’s Calling Restrictions are reset, and the remaining digits that the users dial
are checked against the Calling Restrictions.
Trunk-to-Trunk Transfer for Each Extension 1
This enhancement to the trunk-to-trunk feature enables the system manager to
allow or disallow trunk-to-trunk transfer
on a per-extension basis.
Beginning with
Release 3.1, the default setting for all extensions is restricted.
Programmable Second Dial Tone Timer 1
The system manager can assign a second dial tone timer to lines and trunks to
help prevent toll fraud (for example, when star codes are used). After receiving
certain digits dialed by a user, the CO may provide a second dial tone, prompting
the user to enter more digits. If this second dial tone is delayed, and the user dials
digits before the CO provides the second dial tone, there is a risk of toll fraud or
the call being misrouted. The second dial tone timer enables the system manager
to make sure that the CO is ready to receive more digits from the caller.
Disallowed List Including Numbers Often Used for Toll Fraud 1
Disallowed List #7 contains default entries, which are numbers frequently
associated with toll fraud. By default, Disallowed List #7 is automatically assigned
to both generic and integrated VMI ports used by voice messaging systems. The
system manager must manually assign this list to other ports.