Limiting long distance access

Avaya Toll Fraud and Security Handbook (555-025-600) contains several topics with information about limiting unauthorized calls:

"Tools that restrict unauthorized outgoing calls" in Chapter 5 discusses several ways to avoid toll-fraud:
- Class of Restriction (COR) administration
- Facility restrictions
- AAR/ARS analysis
- Restrictions on station permissions, central office, and incoming tie trunks
"Security measures" in Chapter 5 recommends many ways in which unauthorized use is restricted:
- Administer Facility Restriction Levels (FRLs)
- Prevent after-hours calling with Time-of-Day Routing
- Limiting/blocking international calling
- Restricting/allowing calls to specified area codes/numbers
- Assigning Class of Restriction (COR)
- Trunk access and transfer restrictions
"Detecting toll fraud" in Chapter 5 details how to monitor for toll fraud:
- Traffic measurements and performance
- Call Management System (CMS) measurements
- Security Violations Measurements reports
- Malicious call trace
- Service observing
- Call-forwarding command