User`s manual

premises. The operator presses button 9 to disconnect and turn back on the sirens. Then, the
operator dispatches the police to the premises.
Beginning Another Listen-In/Talk-Back Period
No matter what type of alarm triggers the original listen-in/talk-back period, the
monitoring service operator can choose to begin another listen-in/talk-back period.
There is no limit to the the number of times the operator can begin another listen-in/
talk-back period. To begin another 90-second listen-in/talk-back period, the
monitoring service operator can:
l Press button 7. The message “Voice Active” continues to appear on all
Display Control Keypads, unless the alarm that activated Listen-In/Talk-Back
was a silent alarm. When the system sends a silent alarm, the “Voice Active”
message does not appear.
If button 7 is the first button the operator pressed, and an alarm other than a
silent alarm triggered the listen-in/talk-back period, all Display Control Keypads
set to chime emit a tone indicating that a monitoring service operator is on the
line.
Twenty seconds before the Security System 8300 hangs up, the monitoring service
operator hears 4 tones to warn that the system hangs up in
20 seconds unless the
operator begins another listen-in/talk-back period.
Turning Off Sirens
The monitoring service operator can turn off external sirens if their noise makes it
difficult to hear. Pressing button 0 turns off sirens during a listen-in/talk-back period
in any listen-in/talk-back mode.
NOTE:
Sirens cannot be turned back on by pressing button 0.
People at the premises might be tempted to turn off the sirens by disarming the
system in order to communicate better with the monitoring service. Instruct
customers that disarming the system turns off the Listen-In/Talk-Back feature. They
should rely on the monitoring service operator to turn off the sirens by pressing button
0 so that the Listen-In/Talk-Back feature is not turned off and communication can
continue.
Ending Listen-In/Talk-Back
When the operator has finished listening to sounds or talking with someone at the
premises, the monitoring service operator can:
l Press button 9 to end the listen-in/talk-back connection. When the operator
presses button 9, the system turns on the external sirens again, and restores
the phone line.
D-4 AT&T Security System 8300 Installer’s Manual