Instruction manual

Communication Manager, MultiVantage Software,
DEFINITY ECS, DEFINITY communications systems,
System 75,and System 85
Issue 9 May 2003
7-13
Call detail recording and / station message
detail recording
With the Call Detail Recording (CDR) feature activated for the incoming trunk
groups, you can check the calls into your voice mail ports. A series of short
holding times may indicate repeated attempts to enter voice mailbox passwords.
See also ‘‘Security violation notification (Communication Manager, MultiVantage
Software, DEFINITY ECS and DEFINITY G3)’’ on page 5-59.
NOTE:
Most call accounting packages discard this valuable security information. If
you are using a call accounting package, check to see if this information can
be stored by making adjustments in the software. If it cannot be stored, be
sure to check the raw data supplied by the CDR.
Review CDR for the following symptoms of voice mail abuse:
■ Short holding times on any trunk group where voice mail is the originating
endpoint or terminating endpoint
■ Calls to international locations not normal for your business
■ Calls to suspicious destinations
■ Numerous calls to the same number
■ Undefined account codes
NOTE:
For DEFINITY G2 and System 85, since CDR only records the last
extension on the call, internal toll abusers transfer unauthorized calls to
another extension before they disconnect so that the CDR does not track
the originating station. If the transfer is to your voice mail system, it could
give a false indication that your voice mail system is the source of the toll
fraud.
For Communication Manager, MultiVantage™ Software, DEFINITY ECS,
DEFINITY G1, G3, and System 75:
■ To display the Features-Related System Parameters screen, use the
change system-parameters feature (G1 and System 75 only) or the
change system-parameters cdr feature (G3, MultiVantage™ Software,
and Communication Manager).
NOTE:
Also using direct TACs on some SMDRs/CDRs can result in the
non-recording of fraudulent calls.
■ Administer the appropriate format to collect the most information. The
format depends on the capabilities of your CDR analyzing and recording
device.
■ Use change trunk-group to display the Trunk Group screen.
■ Enter y in the CDR Reports field (SMDR Reports on older systems).