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Yealink WHB620 Dect Wireless Headset User Guide
Safety Instructions
- Before you install and use the device, read the safety instructions carefully and observe the situation during operation.
- During the process of storage, transportation, and operation, please always keep the device dry and clean.
- During the process of storage, transportation, and operation, please avoid collision and crash of the device.
- Please attempt not to dismantle the device by yourself. In case of any discrepancy, please contact the appointed maintenance center for repair.
- Without prior written consent, no organization or individual is permitted to make any change to the structure or the safety design of the device. Yealink is under no circumstance liable to consequences or legal issues caused by such changes.
- Please refer to the relevant laws and statutes while using the device. Legal rights of others should be
respected as well.
Operating Requirements
- Do not let a child operate the device without guidance.
- Do not let a child play with the device or any accessory in case of accidental swallowing.
- Please use the accessories provided or authorized by the manufacturer only.
- The power supply of the device shall meet the requirements of the input voltage of the device. Please use the provided surge protection power socket only
Package List
WHB620 Base (Teams/UC)
WHM621/WHD622 Headset
Micro USB to USB-A USB2.0 Cable 0.8M
Busy light BLT 60 (Optional)
How to Connect
Headset Wear and Adjustment
Earmuff Replacement 
How to Use
- Press to enter the softphone dialing screen, answer or enter a softphone’s call.
- Press to enter the phone dialing screen, answer or end a phone’s call.
- (Teams Edition) Press to invoke the Teams client; Hold 2 seconds to activate Cortana. (UC Edition) Hold 2 seconds to activate voice assistant.
- Press to mute or unmute microphone.
- 7 Hold 2 seconds to activate Cortana; Press to turn up/down volume. Press to mute or unmute microphone
- Press to answer, reject, or end a call.
Cleaning Requirements
- Before cleaning the device, stop using it and disconnect it from the power supply.
- Use a piece of soft, dry and anti-static cloth to clean the device.
- Keep the power plug clean and dry. Using a dirty or wet power plug may lead to electric shock or other perils.
Troubleshooting
The unit cannot supply power to Yealink device. There is a bad connection with the plug.Clean the plug with a dry cloth. Connect it to another wall outlet. The usage environment is out of operating temperature range. Use in the operating temperature range. The cable between the unit and the Yealink device is connected incorrectly. Connect the cable correctly. You cannot connect the cable properly. You may have connected a wrong Yealink device. Use the correct power supply. Some dust, etc., may be in the port.Clean the port.
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Yealink WHB620 Dect Wireless Headset User Guide
