Toll fraud is long-standing issue that impacts many organizations telephony systems. This illicit use of a telephony system to make calls, not necessarily long distance or international calls, is difficult but not impossible to combat. In a Cisco VoIP environment you can use CUCM Class of Service, Cisco Native Gateway Toll Fraud Prevention Applications, Gateway Class of Restriction and Unity Connection rules to try and prevent these unauthorized calls, but even beyond these measures you may still be susceptible to calling vulnerabilities. It’s a good idea to setup CDR alerts to keep you informed of possible toll-fraud.
Within the United States and Canada there are area codes that can be reached without dialing an international code. This is normally where Toll Fraud becomes an issue.
242 Bahamas
246 Barbados
264 Anguilla (split from 809)
268 Antigua and Barbuda
284 British Virgin Islands
340 US Virgin Islands: St Thomas, St John
345 Cayman Islands
441 Bermuda
473 Grenada
649 Turks and Caicos Islands
664 Montserrat
670 Northern Mariana Islands
671 Guam
758 St. Lucia
767 Dominica
784 St. Vincent and Grenada
787 Puerto Rico
809 Caribbean, Bermuda, Puerto Rico, Virgin Islands
868 Trinidad and Tobago
869 St. Kitts/Nevis
876 Jamaica
900 Pay Per Call
939 Puerto Rico
976 Pay Per Call
Variphy Insight offers the ability to alert on these calls, keeping Telephony System administrators always aware of possible problematic conditions.
Setting Alerts is easy:
Step 1. Login to your Variphy Insight system, from the Left Navigation Panel select Call Analytics and choose your corresponding cluster.