System information

APPENDIX I. PROTECTING YOUR PHONE SYSTEM AGAINST TOLL FRAUD I-7
Responding to toll fraud attempts___________________________
If your phone system has been the target of toll fraud attempts, you can do the following:
Q Report Caller ID numbers and called numbers of fraudulent calls to your long distance
carrier. Sometimes carriers can block certain numbers from calling you.
Q Report excessive toll fraud to your local FBI office. Note, however, that the FBI does
not usually get involved with toll fraud unless losses are substantial.
You can also use the information from previous toll fraud attempts to make your system even
more secure. For example, you can add any numbers being called during toll fraud to the list of
numbers prevented with dialing permissions. If fraudulent calls have been made to a particular
few countries that are not otherwise called, disallow dialing those country codes (011xxx).
Using Caller ID to prevent fraudulent calls
If you know the Caller ID from which fraudulent calls originate, you can prevent calls from
those numbers. To do so:
1. Create a user called “Fraud Detector.” Create it with a secure password, a station ID
of 0, and use permissions to prevent it from making any external calls.
2. Log on to ViewPoint as the “Fraud Detector” user.
3. Create a routing list called “Normal.” Delete the “Call me where I am” action. Change
the final action to “Transfer to an extension” and select your main Auto Attendant.
Uncheck the greeting from playing. Make this the default and active routing list.
4. Create a second routing list called “Fraud Call.” Delete the “Call me where I am”
action. Change the final action to “Hang up.”
5. Create a contact named “Fraudulent person.” Edit the phone numbers of the
“Fraudulent person” contact and add any numbers of known fraudulent callers.
6. Create a call rule so that when the contact "Fraudulent person" calls that they are
handled by the "Fraud Call" routing list which hangs up on them.
7. Assign every trunk to call the Fraud Detector user, instead of your auto attendant.
Subsequent calls from the known fraudulent numbers will be automatically hung up on, and will
appear in the Call Log as being from “Fraud Detector.” Other calls will be handled as normal.
As new fraudulent numbers are detected, you can associate the Caller ID with “Fraudulent
person.”