| Hardware Overview |
5
Headset Buttons
No.
Button
Description
1
Bluetooth on/off Button and
Mobile Talk
• Hold for 5 seconds while the headset is powered off to
enter the Bluetooth pairing mode (the button flashes red
and blue). Then, you can search and connect Yealink
UH38 on the mobile phone.
• Hold for 5 seconds to disable Bluetooth.
• Control button of Bluetooth device call: press to answer,
reject, or end a mobile call.
2
Mute/Unmute Button
Press to mute or unmute the microphone.
3
PC Talk Button
Control calls from devices connected to the headset via a
USB cable: press to answer, reject, or end a PC/desk phone
call.
4
Volume up Button
Volume down Button
Press to turn up/turn down volume.
5
(Teams Edition) Teams
Button
• Hold for 2 seconds to activate Cortana integrated in
Teams (this requires Microsoft's support).
• Press to invoke the Teams client.
Summary of Contents for UH38 Duo USB-C Teams
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