Intercom Operation Mode
DV64440.03 Issue 09 November 2019 ACU6100 55
Isolated / Call Function - Cabin
Isolated / Call Function - Cabin
ISOL/CALL key
In the cabin the key "ISOL/CALL" is used to send a - call for connection - to the
cockpit circuit if the intercom circuits are disconnected (isolated).
• Push to the key "ISOL/CALL".
o A call for connection is sent to the cockpit circuit.
o The LED "ISOL/CALL" flashes.
• A member of the cockpit circuit can accept the call and can connect the
cabin circuit with a push to the key "ISOL/CALL".
NOTICE:
• LED on:
o Cockpit and cabin intercom circuits are disconnected (isolated).
• LED off:
o Cockpit and cabin intercom circuits are connected.
• LED flashes:
o A call was sent.
o The system is in call mode.
o A call tone is audible in the cockpit (depends on configuration).
• If the intercom circuits are connected, the key "ISOL/CALL" on the cabin
devices have no function.
For some special mission profiles also the cabin circuit members must be able to
disconnect the cockpit and the cabin circuit (depends on configuration).
• The cabin circuit members can only disconnect the intercom circuits.
• Only a cockpit circuit member can connect the circuits.
Emergency Call (E-Call)
A call for connection can be a "Call" or an "Emergency Call" (E-Call).
To send an E-Call, an external emergency switch is necessary.
• Push the external E-Call key.
• The "ISOL/CALL" LED flashes with the double frequency of the "Call" notification.
• An E-Call tone, different to the "Call" tone is audible in the cockpit (depends on
configuration).
3.8 Intercom Operation Mode
Ways to start the intercommunication between the users:
• Voice controlled (VOX).
• Intercom with PTT-IC (on rotary wing panel).
• External PTT switch controlled.
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