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Listen mode (cont'd)
Selecting the sending zone on other keypads
connects their amplifiers to the audio bus so
they can listen to the sending zone.
Listen mode can be used with DND in the same
zone as long as Listen mode is enabled first.
On either type of keypad, selecting a zone other
than its own cancels Listen mode.
Because Listen mode is the lowest priority
communication, it can be interrupted by other
functions, including an intercom session from
the Listen mode sending keypad. When Listen
mode is interrupted, the sending and receiving
keypads give a system busy indication until the
interruption is over.
If the audio bus is not available, attempting to
activate a keypad's microphone for Listen mode
will result in a system busy indication.
Audible keypad volume level indication
When the audio bus is inactive, pressing the
Volume Up or Volume Down key on a keypad
sounds a ping tone to audibly indicate the key-
pad's output level. As volume is increased the
ping tone gets louder and vice versa. Once the
volume adjustment reaches either end of the
range, the ping tone no longer sounds.
System busy
If someone attempts to start a page or inter-
com session when the system is busy, the Talk
key on the keypad blinks red for 7 seconds to
indicate the system is unavailable. The ISK2
Advanced Keypad display also flashes Busy at
the same time.
INSTALLER SECTION
Do Not Disturb (DND) mode
Placing a zone in Do Not Disturb (DND) mode
prevents the audio bus from being switched to
the keypad amplifier in that zone. Thus, that
zone will not receive any pages, intercom calls,
door station calls, or doorbell chimes (unless a
separate doorbell is used). However, DND mode
will not prevent the zone from receiving audio
from a multiroom audio system.
The volume setting in effect when a zone is put
in DND mode is retained when DND is canceld.
DND mode can be used in conjunction with
Listen mode as long as Listen mode is selected
first. If DND is selected first, pressing any key
to enable Listen mode will exit DND mode.
When a zone attempts an intercom session with
a zone that is in DND mode, the DND key on
the sending keypad blinks red for 7 seconds
after the Talk key is pressed. Also, on the ISK1
Basic Keypad, the zone key for the zone in DND
mode blinks red.
Keypad backlight
The keypad backlighting comes on whenever
any system function is activated and goes off
after 60 seconds of system inactivity.
System Functions
31
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