Technical information

Toll Fraud Job Aids
14-2 Issue 7 June 2001
 An upsurge in use on DISA or other trunks.
 Unusual increase in customer premises equipment-based system memory
usage.
 Unexplained changes in system software parameters.
 Unexplained problems related to being “locked out” of the system or
Personal Identification Number (PIN) changes in the voice mail system.
 Significant increase in calls from a single geographic area or from the same
Automatic Number Identification (ANI).
 Any discrepancies in telephone bills, such as unusual calling patterns, calls
to international locations with which the user does not normally interact,
and calls for which you cannot account.