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Security of Your System:
Preventing Toll Fraud
As a customer of a new telephone system, you should be aware that there
is an increasing problem of telephone toll fraud. Telephone toll fraud can
occur in many forms, despite the numerous efforts of telephone
companies and telephone equipment manufacturers to control it. Some
individuals use electronic devices to prevent or falsify records of these
calls. Others charge calls to someone else’s number by illegally using lost
or stolen calling cards, billing innocent parties, clipping on to someone
else’s line, and breaking into someone else’s telephone equipment
physically or electronically. In certain instances, unauthorized individuals
make connections to the telephone network through the use of remote
access features.
The Remote Access feature of your system, if you choose to use it, permits
off-premises callers to access the system from a remote telephone by
using a telephone number with or without a barrier code. The system
returns an acknowledgment signaling the user to key in his or her barrier
code, which is selected and administered by the system manager. After
the barrier code is accepted, the system returns dial tone to the user. If
you do not program specific outward calling restrictions, the user will be
able to place any call normally dialed from a telephone associated with the
system. Such an off premises network call is originated at, and will be
billed from, the system location.
Maintenance and Troubleshooting A-11