momentary activation, press and hold the key. It will remain on as long as you
hold it and it will turn off when you release it.
Calling an Intercom Channel
1.
Press and hold the Call key for the channel that you want to call. An inaudible
call signal will be sent, and your listen key for that channel will automatically
turn on in preparation to receive a verbal response.
2.
When you hear a response, release the Call key.
3.
If you are using manual microphone activation, make sure your microphone is
on: for a dynamic mic headset, tap the Headset key to turn it on; for a panel-
mounted microphone or electret headset, tap the Panel Mic key to turn it on.
4.
Turn on the Talk key for the channel you called to begin you conversation.
5.
Turn off your Talk and Listen keys to end the conversation.
Microphone Mute During Talk
You can mute the microphone while talking. Simply tap either the Headset key or the
Panel Mic key, whichever is currently being used. Tap the key again to turn the mi-
crophone back on. (If you are using Vox, tap the key twice to reactivate vox.)
All Talk
You can talk to all intercom stations that currently have their listens activated. This
applies to both channels of the US2000A as well as all talk channels of any con-
nected ES4000A Expansion Stations. Use All Talk as follows:
1.
If you are using manual microphone activation, make sure the proper micro-
phone switch is turned on (either Headset or Panel Mic).
2.
Press and hold the All Talk key while talking. Release it when finished.
☞
To insure that the All Talk key is never accidentally left in the on position, it
does not latch.
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