D400 DECT USB adapter
Note: The DECT adapter connects to a USB-A port on your computer. To connect to a
USB-C port, first connect your DECT adapter to the accessory USB-C adapter and plug
into your computer.
Standard LEDs
USB LEDs Status
Solid green Headset connected; subscription successful
Fast flashing green Incoming call
Flashing green On a call; call on hold; streaming media
Solid red Call is muted
Flashing red and green Subscribe mode
Flashing green Update in progress
Red for 4 seconds Subscription failed
LEDs when Microsoft Teams* is detected
USB LEDs Status
Solid white Connected to Teams
Pulsing white Teams notification
Flashing white for 10
seconds
Teams connection failed
Note: *Requires Microsoft Teams desktop application.
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