Yealink UH48 USB Wired Headset

1 Package List

• Headset
• Waterproof Zipper Bag
• Quick Start Guide

Note: It is recommended to use the included accessories. Other accessories may have compatibility issues that prevent them from working properly.

2 Connection

Plug the headset into either a USB-A or USB-C port on your computer, depending on the USB variant of the headset.

Diagram showing a headset connected to a PC via a USB-A cable, and an alternative connection to a desk phone via USB.

3 Overview

Diagram of the Yealink UH48 headset with callouts for: Microphone, Voice Assistant button, Mute button, Volume up/next track button, Play/pause button, Volume down/previous track button, ANC button, Call control button, Busylight. An arrow indicates the microphone boom can be moved up/down to unmute or answer calls.

Controls:

• Microphone: Main microphone input.
• Voice Assistant button: Activates voice assistant.
• Mute: Mutes/unmutes the microphone.
• Volume up/next track: Increases volume or skips to the next track.
• Play/pause: Plays or pauses audio.
• Volume down/prev. track: Decreases volume or skips to the previous track.
• ANC: Activates/deactivates Active Noise Canceling.
• Call control: Manages calls.
• Busylight: Indicator light for call status.

4 Busylight Control

• Via Yealink USB Connect: Control busylight settings through the Yealink USB Connect software.
• Via headset buttons: Simultaneously press and hold the Volume +/- buttons to turn the busylight on, indicated by a solid red LED.

5 Calls & Music

Call Management:

• Press once: Answer call, End call.
• Double-press: Accept incoming call and end active call, Redial, Reject incoming call and continue active call.
• Hold for 2 sec: Hold call, Put current call on hold and answer incoming call, Switch between held call and active call.

Microphone Control:

• Press once: Mute/unmute the microphone.
• Alternatively: Move the microphone boom-arm up or down.

Music Control:

• Press once: Volume up (+) / Volume down (-).
• Hold for 1.5 sec: Next track (volume +), Previous track (volume -).
• Press once: Play/pause music.

6 Sound Control

• Press once: Switch among Noise Canceling, Ambient Sound, or Off.
• Hold for 2 sec: Activate Immersive Mode.

Notes:

• Noise cancellation levels can be set via Yealink USB Connect (desktop) or Yealink Connect (mobile app).
• In Noise Canceling mode, ambient sound may not be heard, depending on conditions and audio playback.
• Do not use the headset in environments where not hearing ambient sounds would be dangerous.

7 Replace Ear Cushions

Align the new cushion with the headset base and press firmly together.

Note: Replaceable ear cushions must be purchased separately.

Diagram illustrating the four steps for replacing ear cushions on the headset.

8 Software

Update or manage your Yealink headsets using the Yealink USB Connect software.

Download from Yealink website: https://www.yealink.com/product/yuc

Note: Requires Yealink USB Connect version 0.34.x.x or higher.

Compatibility: UH48 supports Yealink T27G/T4xS/T4xU/T53/T5xW/T58/VP59 via USB connection. For optimal experience, phone firmware v86 (xx.86.x.xx) or higher is recommended. Refer to the "Yealink Headset Compatibility Guide" for details.

For warranty service, visit https://ticket.yealink.com/page/headset/warranty-service.html to submit an RMA Claim.

9 Regulatory Notices

Operating Ambient Temperatures:

• Operating: +32 to 113°F (0 to 45°C)
• Relative humidity: 5% to 90%, non-condensing
• Storage: -22 to +158°F (-30 to +70°C)

Warranty:

Yealink product warranty is limited to the unit itself when used normally. Yealink is not liable for damage or loss resulting from product use, third-party claims, or problems arising from use with other devices.

DC Symbol:

The [DC voltage symbol] indicates DC voltage.

Restriction of Hazardous Substances Directive (RoHS):

This device complies with EU RoHS Directive. Compliance statements available via support@yealink.com.

Safety Instructions:

Read and follow safety instructions to reduce risk of fire, electric shock, and injury. Keep the device dry, clean, and avoid collision. Do not dismantle. Use only manufacturer-authorized accessories. Ensure power supply meets device requirements. Keep hands dry when plugging/unplugging cables. Avoid contact with water. Disconnect during thunderstorms. Disconnect if unused for long periods. Disconnect immediately if smoke, abnormal noise, or smell occurs. Do not insert foreign objects. Connect grounding cable first.

Environmental Requirements:

Do not cover ventilation openings. Place in a well-ventilated area, away from direct sunlight, dust, flammable objects, and heat sources.

Operating Requirements:

Children should use under guidance. Do not let children play with the device or accessories to avoid accidental swallowing.

Notices of Cleaning:

Use a soft, dry, anti-static cloth for cleaning.

Environmental Recycling:

Do not dispose of with domestic waste. Recycle components according to local regulations. The crossed-out garbage can symbol indicates special waste disposal.

Troubleshooting:

Unit cannot supply power: Check operating temperature range, ensure correct cable connection, clean ports.

FCC CAUTION:

Complies with FCC Part 15. Subject to two conditions: no harmful interference, and acceptance of received interference. Modifications not approved by the responsible party may void user authority. Tested to comply with Class B digital device limits for residential installations. May cause radio frequency interference; user is encouraged to correct interference by reorienting antenna, increasing separation, connecting to a different circuit, or consulting a dealer/technician. Complies with FCC radiation exposure limits. Transmitter must not be co-located with other antennas/transmitters.

ISED WARNING:

Complies with Canada's Innovation, Science and Economic Development Canada licence-exempt RSS standard(s). Subject to two conditions: no interference, and acceptance of interference. Complies with Canadian ICES-003 Class B digital apparatus. Communications may not be protected from interception.

Contact Information:

YEALINK NETWORK TECHNOLOGY CO.,LTD. No.666 Hu'an Rd, Huli District Xiamen City, Fujian, P.R. China

YEALINK (EUROPE) NETWORK TECHNOLOGY B.V. Sir Winston Churchillln 299 k, 2288DC Rijswijk

YEALINK (USA) NETWORK TECHNOLOGY CO., LTD. 999 Peachtree Street Suite 2300, Fulton, Atlanta, GA, 30309, USA

Made in China

Web: www.yealink.com

Copyright ©2024 YEALINK(XIAMEN) NETWORK TECHNOLOGY CO.,LTD. All rights reserved.