Technical information

Voice Messaging Systems
6-14 Issue 7 June 2001
 To review the traffic measurements, use list measurements followed by
one of the measurement types (trunk-groups, call-rate, call-summary, or
outage-trunk) and the timeframe (yesterday-peak, today-peak, or
last-hour).
 To review performance, use list performance followed by one of the
performance types (summary or trunk-group) and the timeframe
(yesterday or today).
ARS Measurement Selection
The ARS Measurement Selection can monitor up to 20 routing patterns
(25 for G3) for traffic flow and usage.
For DEFINITY ECS, DEFINITY G1, G3, and System 75:
 Use change ars meas-selection to choose the routing patterns you want
to track.
 Use list measurements route-pattern followed by the timeframe
(yesterday, today, or last-hour) to review the measurements.
For DEFINITY G2, use Monitor I to perform the same function.
Automatic Circuit Assurance
This monitoring technique detects a number of short holding time calls or a single
long holding time call which may indicate hacker activity. Long holding times on
Trunk-to-Trunk calls can be a warning sign. The ACA feature allows you to
establish time limit thresholds defining what is considered a short holding time and
a long holding time. When a violation occurs, a designated station is visually
notified.
When notification occurs, determine if the call is still active. If toll fraud is
suspected, use the busy verification feature (see ‘‘Busy Verification’’ on page
6-15) to monitor the call in progress.
For DEFINITY ECS, DEFINITY G1, G3, and System 75:
 Use change system-parameters feature to display the Features-Related
System Parameters screen.
 Enter y in the Automatic Circuit Assurance (ACA) Enabled field.
 Enter local, primary, or remote in the ACA Referral Calls field. If
primary is selected, calls can be received from other switches. Remote
applies if the PBX being administered is a DCS node, perhaps unattended,
that wants ACA referral calls to go to an extension or console at another
DCS node.
 Use change trunk group to display the Trunk Group screen.
 Enter y in the ACA Assignment field.