Yealink UH38 Wired Headset User Guide
- June 6, 2024
- Yealink
Table of Contents
Yealink UH38 Wired Headset
About This Guide
This guide contains instructions for connecting and using your UH38
headset.
Hardware Overview
- Package List
- Headset Buttons
- Busylight Indicator
- Mobile/PC Button Indicator
- Teams/Voice Assistant Indicator
Package List
- UH38 dual headset (with built-in battery)/mono headset (without built-in battery)
- USB 2.0 Cable ( USB-A to USB-C/USB-C to USB-C, line length 1.2 meters )
- Carrying Case
- Quick Start Guide
Note: We recommend that you use the included accessories, and other accessories may have compatibility issues that prevent them from working properly.
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.
| No. | Button | Description |
|---|---|---|
| (UC Edition) Voice Assistant Button | Hold for 2 seconds to activate the |
voice assistant.
Note: Before using the Teams feature, you should install the Microsoft Teams client on your PC. For more information on LED indicator status, please refer to the user guide.
Busylight Indicator
Introduction of the busy light indicator on both sides of the headset:
| Indicator | Description |
|---|---|
| Red light flashes | Incoming call rings. |
| Solid red light | During a call. |
Mobile/PC Button Indicator
Mobile Button Indicator.
| Indicator | Description |
|---|---|
| The green light is on for 2 seconds, and then the light goes out | Enable |
Bluetooth
The red and blue lights flash alternately for 500 ms/time| Bluetooth enters
the pairing state
The red light is on for 2 seconds, and then the light goes out| Disable
Bluetooth
The blue light is on for 2 seconds, and then the light goes out| Bluetooth
pairing succeeded
Green light flashes| Received an incoming call
Solid green| During a call
The green light double flashes| Stay on the line
PC Button Indicator
| Indicator | Description |
|---|---|
| Green light flashes | Received an incoming call |
| Solid green | During a call |
| The green light double flashes | Stay on the line |
| Indicator | Description |
|---|---|
| The green light flashes slowly during the upgrade | Headset is being upgraded |
(when the upgrade is complete, the light of the mobile button, mute button, and PC button flash simultaneously for 1 second and then the light goes out)
Teams/Voice Assistant Indicator
When the headset activates the voice assistant, the button backlight is always
on. When the headset works with Teams Client, the button backlight is shown
below:
| Indicator | Description |
|---|---|
| White light flashes slowly | Receive a missed call/voice message/meeting |
notification
White indicator light flashes slowly and becomes solid white light| Teams
connected successfully
The white light flashes slowly and then the light goes out| Teams is not
connected
UH38 Headset Connection
- Connecting to PC/Yealink IP Phone via the USB Cable
- Connecting to Mobile Device via Bluetooth
- Disable Bluetooth
Connecting to PC/Yealink IP Phone via the USB Cable
Connect the headset to the PC/Yealink IP phone via the USB cable
Note: For the dual headset, you can charge the headset after connecting it to your PC/phone via the USB cable.
Connecting to Mobile Device via Bluetooth
You can connect the headset to your phone via the built-in Bluetooth to use as
a Bluetooth headset.
Procedure
- The headset enters the Bluetooth pairing mode.
- Unpacking for the first time (Bluetooth has not been paired): Press and hold the Mobile button for 3 seconds to enable the Bluetooth, and the headset enters the Bluetooth pairing automatically.
- Bluetooth has been paired: Press and hold the Mobile button for 5 seconds to enable the Bluetooth, and the headset enters the Bluetooth pairing automatically. The voice prompts “Bluetooth on, remaining talk time XX hours, pairing mode”, then the headset enters the Bluetooth pairing mode. The red and blue lights of the Mobile button will flash alternately (500ms/time) after 2 seconds of the green light of the headset.
- Enable Bluetooth on your mobile phone/IP phone/PC.
- You can search and select the Yealink UH38 from the list of Bluetooth devices to pair with UH38.
The voice prompts “Mobile one connected” means that the connection is
successful.
Tip: When you want to pair the headset with a new device (Device 2) after
the headset has been paired with a Bluetooth device (Device 1), and you need
to disable the Bluetooth on Device 1 and can hear the voice prompts “Mobile
one disconnected”. Or you need to make sure that Device 1 is not within the
range of the headset and then connect to other devices.
Note: Yealink UH38 is the default device name. For Bluetooth
compatibility information, please refer to the specific compatibility guide.
Disable Bluetooth
When the headset is not on a call, you can press and hold the Mobile button
for 5 seconds until the voice prompts “Bluetooth off”. After you disable
Bluetooth, you can quickly disconnect the Bluetooth connection of your headset
from your Bluetooth device. For the mono headset, you only need to unplug the
USB cable and disable the Bluetooth.
Headset Wear
- Left or Right Wearing Style
- Adjusting the Microphone
- Clip the Microphone Cable on Clothes
Left or Right Wearing Style
Mono Headset
You can wear the headset on the left or right by flipping the microphone to
the other side (300° limit).
Dual Headset
You need to distinguish the left and right of microphone, and the rotation
angle of the microphone is up to 150°.
Adjusting the Microphone
You can adjust the microphone to find the most comfortable fit. When using the
headset, you can bend the microphone boom properly and bring it closer to your
mouth for a better sound pickup.
Clip the Microphone Cable on Clothes
You can fix the microphone cable to your clothes with clothespins. The
clothespin keeps the microphone cable in a convenient position when using your
mobile phone away from your PC.
Headset Usage
- Status Check
- Basic Call and Music
- Mute Usage
- Multiple Calls
Status Check
You can manually check the remaining talk time and device connection of the
headset
Procedure
In the idle state, press and hold the Mobile button for 2 seconds
Results
- Dual Headset: the voice prompts “Remaining talk time xx hours, XXX connected”.
- Mono Headset (without built-in battery): the voice prompts “XXX connected”.
Basic Call and Music
| Headset | Feature | Action |
|---|
**** (Control buttons for Bluetooth device call)
| ****
**** Answer call
| Press the Mobile button.
Note : When receiving an incoming call, the Busylight LED flashes red quickly, and the Mobile button LED flashes green. During the call, the Busylight LED glows red and Mobile button LED glows green.
End call| Press the Mobile button.
Reject call| Press the Mobile button twice.
Redial| Press the Mobile button twice in the idle state.
**** Hold/resume call| Press and hold the Mobile button for 2
seconds.
Note : When a call is placed on hold, the
Mobile button LED flashes green.
Play/Pause music| Press the Mobile button.
(Control buttons for USB device call)
| Answer PC/IP phone call| Press the PC button.
Note: When receiving an incoming call, the Busylight LED flashes red quickly, and the PC button LED flashes green. During the call, the Busylight LED glows red and PC button LED glows green.
End PC/IP phone call| Press the PC button.
Reject PC/IP phone call| Press the PC button twice.
Redial| Press the PC button twice in the idle state.
Hold/resume call| Press and hold the PC button for 2 seconds.
Note : When a call is placed on hold, the
PC button LED flashes green.
| Headset | Feature | Action |
|---|---|---|
| **** | **** |
Adjust volume
| Press the Volume Up / Volume Down
button.
Note: press and hold the Volume Up / Volume Down button to increase/ decrease the volume.
Manually turn on/off the headset Busylight indicator| Press the Volume Up / Volume Down
button when not in a call.
|
Mute/un-mute microphone
| ****
Press the Mute button.
Note : When a call is muted, the Mute
button LED is always on.
Note: It only works when the boom is down.
|
(Teams version) Activate Cortana integrated in Teams
| Press and hold the Teams button for 2 seconds.
Note: this requires Microsoft’s support.
(Teams version) Invoke the Teams client
| ****
Press the Teams button.
|
**** (UC version) Activate voice assistant
| ** Press and hold the Voice Assistant**
button for 2 seconds.
Mute Usage
You can mute the microphone by moving the boom up or unmute it by moving it
down.
Start Mute detection feature: it will prompt “Muted” when you are speaking into the muted microphone. Otherwise, it will not prompt.
Multiple Calls
The headset can answer and handle multiple incoming calls at the same time.
| Handle multiple calls | Description |
|---|
1.The headset is on a call via a USB cable (the PC button glows solid green
and the busylight glows solid red), and you can answer a new call via the USB
cable at this time:
Answer the new call and hang up the current call| Press the PC button.
Reject the new call and continue the current call| Press the PC button
twice.
Answer the new call and hold the current call| Press and hold the PC
button for 2 seconds.
2.The headset is on a call via a USB cable (the PC button glows solid green
and the busylight glows solid red), and you can answer a new call via
Bluetooth at this time:
Reject the new Bluetooth call and continue the current USB cable call| Press
the Mobile button twice.
Answer the new Bluetooth call and hold the current USB cable call| Press and
hold the Mobile button.
3.The headset is on a call via Bluetooth (the Mobile button glows solid
green and the busylight glows solid red), and you can answer a new call via
Bluetooth at this time:
Answer the new call and hang up the current call| Press the Mobile button.
Reject the new call and continue the current call| Press the Mobile button
twice.
| Handle multiple calls | Description |
|---|---|
| Answer the new call and hold the current call | Press and hold the Mobile |
button for 2 seconds.
4.The headset is on a call via Bluetooth (the Mobile button glows solid
green and the busylight glows solid red), and you can answer a new call via
the USB cable at this time:
Reject the new USB cable call and continue the current Bluetooth call| Press
the PC button twice.
Answer the new call and hold the current Bluetooth call| Press and hold the
PC button.
5.Multiple calls switching
Switch calls between USB cable calls and Bluetooth calls (ie, switch device
calls)| Press the PC (or Mobile button).
Switch USB calls via the USB cable: (ie, multi-call switching in the same
device)| Press and hold the PC button (or Mobile button).
Switch from a call on the current bluetooth device to a call on another
bluetooth device| Press and hold the Mobile button for 2 seconds.
6.Conference calls
Merge the USB cable call and Bluetooth call into a conference call| Press and
hold the PC button and the Mobile button for 2 seconds simultaneously.
Split the conference calls| During the conference calls:
• Press and hold the PC button for 2 seconds to split the conference calls. At this time, the PC continues the call, and the mobile phone call stays on the line.
• Press and hold the Mobile button to split the conference calls. At this time, the mobile phone continues the call, and the PC call stays on the line.
Recovery Factory Setting
Procedure
Press and hold the mute button and the Teams/voice assistant key for 6 seconds
until you hear the voice- “Factory reset. Bluetooth on, remaining talk time xx
hours, pairing mode”. After all the button lights flash simultaneously, the
mobile button indicator will flash red and blue alternately to enter the
pairing mode.
Results
The list of paired devices will be cleared and all settings are reset after
the headset is restored.
Yealink USB Connect
Yealink USB Connect is a computer software designed to manage Yealink USB devices. With Yealink USB Connect, you can:
- Get an overview of connected Yealink USB devices
- Manage your Yealink USB devices
- Update your Yealink USB device to enhance its performance and features
- Give feedback on your Yealink USB device
Note: Download via support.yealink.com.
• Firmware Update
Firmware Update
Procedure
1. Connect the headset to the USB port of a PC.
2. Update the headset firmware via Yealink USB Connect.
- Check for updates
- Update manually
FAQ
View the FAQ guide on http://support.yealink.com/.
References
Read User Manual Online (PDF format)
Read User Manual Online (PDF format) >>