Technical information
MERLIN LEGEND/MAGIX Toll Fraud
Issue 7 June 2001
5-37
Disconnect Signaling Reliability 3
Use this procedure to classify the disconnect signal sent by the central office on
loop-start trunks as one of the following:
Reliable. Signal sent within a short time.
Unreliable. Signal may not be provided.
**** SECURITY ALERT ****
Toll fraud can occur if you have loop-start trunks with unreliable disconnect. In this
situation, if someone calls you and they hang up, the central officecould send dial
tone before the Legend user hangs up, allowing the user to place another call as if
it originated at your company.
The setting selected applies to all trunks in the system because trunks cannot be
programmed individually. The reliable/unreliable setting does not apply to
loop-start trunks emulated on a T1 facility. If you specify a reliable disconnect for
trunks programmed with a short hold disconnect interval, active calls, as well as
trunks on hold, may be disconnected. For more information about reliable and
unreliable disconnect and its implications, see the Feature Reference.
Marked System Speed Dial
For numbers that include confidential information, such as passwords or account
billing numbers, the listing can be specifically designated in system programming
to suppress the number dialed so that users with display telephones see only the
code that is dialed (600–729) and not the number dialed. This is called a marked
System Speed Dial code. When a number is dialed using a marked System
Speed Dial code, any calling restrictions (such as Toll or Outward Restrictions)
assigned to the extension are overridden. In addition, the System Speed Dial
code is printed on Station Message Detail Recording (SMDR) reports instead of
the number.
Night Service
Night Service Group Assignment
Each Night Service group is associated with either an individual QCC (in
Hybrid/PBX mode) or an individual DLC through system programming.
A Night Service group can include the following types of members:
Any type of extension
One Calling Group for each Night Service group
Calling Group with one non-local member