Contents
DECT information 3
DECT Enhanced security 3
Overview 4
Headset overview 4
Charge stand (select models only) 4
D400 DECT USB adapter 5
Fit and charge 6
Wear on the right or left 6
Charge your headset 6
Talk time 6
Battery 6
Connect to PC 7
Subscribe D400 USB adapter again 7
Configure USB adapter 7
Load software 9
Update firmware 9
The basics 10
Headset overview 10
Power on/off 10
Make, answer, end calls 10
Adjust volume 11
Mute 11
Interact with Microsoft Teams 11
View Microsoft Teams notifications 11
More Features 12
Optimise audio quality 12
Limit office noise 12
Set up a conference call 12
Subscribe D400 USB adapter again 12
End subscription mode 13
Online indicator 13
Out of range warning tones 13
Troubleshooting 14
Headset 14
Softphone 14
What's in the box 16
Support 17
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