System information

System Security and Toll Fraud

xxviii Issue 1 October 1997

Coverage Limitations with Enhanced Call

Transfer

With Enhanced Call Transfer, the reason for a transfer is included in the control

link message that the AUDIX system sends to the switch. For Call Answer calls,

such as calls that are redirected to the AUDIX system when an extension is busy

or doesn’t answer, when a caller enters to Escape to Attendant, the AUDIX

system normally reports the transfer to the switch as “redirected.”

The switch uses this reason to determine how to proceed with the call. If the

reason for the transfer is “redirected,” the call will not follow the destination’s

coverage path or its call forwarding path. This is because the switch will not

redirect a previously redirected call.

This restriction may not be acceptable where it is desirable to have the call follow

the coverage path of the “transferred-to” station. Enhanced Call Transfer can be

administered to allow this type of transfer.

Detecting Voice Mail Fraud

Table 2 shows the reports that help determine if your voice mail system is being

used for fraudulent purposes.

Table 2. Reports and Monitoring Techniques for the AUDIX system

Monitoring Technique Switch

Call Detail Recording (SMDR) All

Traffic Measurements and Performance All

Automatic Circuit Assurance All

Busy Verification All

Call Traffic Report All

Trunk Group Report G1, G3, System 75

AUDIX Traffic Reports All