User`s manual

Understanding the Listen-In/Talk-Back Feature
When the monitoring service’s receiver successfully receives an alarm from the
Security System 8300, it automatically sends a tone to the system to acknowledge
receipt of the alarm and to restore the phone line at the premises for further use. This
tone is called “kiss-off.” When Listen-ln/Talk-Back is not enabled, the Security
System 8300 hangs-up immediately after receiving kiss-off in response to the last
alarm sent during a call from the system.
When
Listen-ln/Talk-Back is enabled, the system does not hang-up immediately after
kiss-off. Instead, the system stays on the phone line for 90 seconds after kiss-off.
The system automatically enters the listen-in mode. The sirens at the keypads are
silenced and the microphones in all Display Control Keypads are turned on. The
message “Voice Active” appears on all Display Control Keypads. The monitoring
service operator can pick up a touch-tone phone connected to the receiver and listen
to sounds at the premises for the remainder of the 90-second listen-in/talk-back
period.
People at the premises might be concerned that the monitoring service can
eavesdrop on them at any time. Remind concerned customers that Listen-ln/Talk-
Back is possible only during an alarm. Tell them they can turn off the Listen-In/Talk-
Back feature by disarming the system. Also, when the
Listen-In/Talk-Back feature is
in use, and was triggered by an alarm other than a silent alarm, the message
“Voice Active” appears on all Display Control Keypads.
During the first 90-second listen-in/talk-back period, the “Voice Active” message
appears and a monitoring service operator could be listening. However, someone at
the premises does not have confirmation at this time that a monitoring service
operator is listening. When the monitoring service operator presses button
1, 2, 3, 7
or 0, a listen-in/talk-back confirmation tone is emitted at all Display Control Keypads.
This single tone confirms to someone at the premises that an operator is listening.
If a silent alarm triggers the listen-in/talk-back period, the “Voice Active” message
does not appear and the Display Control Keypads do not emit a listen-in/talk-back
confirmation tone. A silent alarm is generated in either of the following ways:
l when the user enters an ambush code
l when the alarm is generated by a sensor assigned to the silent panic zone
category.
NOTE:
The Display Control Keypad’s dip switch 4 must be set to chime for the keypad to
emit the listen-in/talk-back confirmation tone in listen-in mode. Also, the keypad’s
volume control must not be set to the lowest level.
Changing Listen-In/Talk-Back Modes
If the alarm that triggers the Listen-In/Talk-Back feature is not a silent alarm, the
monitoring service operator can change the listen-in/talk-back mode. During the first
90-second listen-in/talk-back period, as well as during subsequent periods, the
operator can turn on other listen-in/talk-back modes by pressing buttons on a touch-
tone phone connected to the receiver. The operator can change modes as often as
D-2 AT&T Security System 8300 Installer’s Manual