Aastra 312 RELEASE NOTES, Руководство пользователя

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Basic functions
Change the display contrast
In order to adjust the display to on-site illumination/brightness, you can change the contrast. The
setting can be made in the menu “Display > Contrast”.
Handset secrecy button
If you do not want the person you are on the phone with to hear what you are saying e.g. to another
person in the room, you can momentarily activate the secrecy button.
You are in the middle of a conversation
D
Press . The symbol appears in the display.
The person you are talking to on the phone cannot hear what you are saying anymore.
When you want to talk to the person again, press the left softkey once more. The person you are on
the phone with can hear what you are saying again.
Mute