Technical information

MERLIN Plus Communications System
Issue 7 June 2001
5-61
 Monitor your SMDR records and/or your Call Accounting System reports
regularly for signs of irregular calls. Review these records and reports for
the following symptoms of abuse:
— Patterns of authorization code usage (same code used
simultaneously or high activity)
— Calls to international locations not normal for your business
— Calls to suspicious destinations
— High numbers of “ineffective call attempts” indicating attempts at
entering invalid barrier codes or authorization codes
— Numerous calls to the same number
— Undefined account codes
 Activate “Automatic Call Restriction Reset” (R2 only)
Protecting Remote Call Forwarding (R2 only)
For Release 2, the MERLIN Plus Communications System allows a customer to
forward an incoming call to another (remotely located) telephone number.
However, a caller could stay on the line and receive another dial tone. At this
point, the caller could initiate a toll call without any outward call restrictions at all.
The following security measures assist you in managing the Remote Call
Forwarding feature to help prevent unauthorized use.
 Implement the “Automatic Timeout” feature of the MERLIN Plus
Communications System R2 “B” (Remote Call Forwarding feature).
Contact the Avaya National Service Assistance Center (NSAC) at
800 628-2888 to determine if your system has the Automatic Timeout
feature as part of the 533B memory module.
 Provide the Remote Call Forwarding capability only to those who need it.