Having issues with your headset or want to know how to adjust a specific setting on your Yealink WH66? On this page, we explain how to approach this. Can't find your answer? Please use the Feedback option at the bottom of the page.

• 1. I have problems with my headset
• 1.1 Check if your headset is properly connected
• 1.2 Check if the device you're using is compatible with the Yealink WH66 headset.
• 1.3 Reset the headset to default settings
• 1.4 Update the software/firmware of the headset
• 1.4.1 The Yealink headset stops during the update: Recovery mode.
• 1.5 Other issues
• 1.5.1 The audio from my headset is soft
• 1.5.2 The 'Out of Range' message is displayed
• 1.5.3 The audio drops (occasionally) during calls
• 2. Settings
• 2.1 I want the ringtone to play on the Yealink headset and/or phone
• 2.2 Can I answer/end a call from the headset?
• 2.3 Can I connect the headset to the device via Bluetooth?
• 2.4 How can I adjust the headset settings?

1. I have problems with my headset

Follow the steps below in order and your problem will be solved. If you skip any steps, there's a high chance it won't work.

1.1 Check if your headset is properly connected

Connect the base station of the headset to your Yealink device using the supplied USB cable. Use the USB connection on the bottom of the base station. Note! Always use the power adapter that came with it. Without this adapter, you may not get enough power to fully operate the headset.

1.2 Check if the device you're using is compatible with the Yealink WH66 headset.

The headset is particularly compatible with the following Yealink device types*:

T4xS, T4xU, T53, T53C, T5xW, T58A, VP59 * x can be replaced with any number.

The firmware version consists of 4 segments, separated by periods. Example: 66.86.188.2 If the second segment is lower than 86, we recommend updating the firmware. The instructions for updating your Yealink device can be found here.

1.3 Reset the headset to default settings

The update did not solve the problem. We'll therefore reset the headset to the default settings. This option will restore all settings to the factory defaults.

On the display, you'll see that the factory reset is being performed. This may take a few minutes. Once the factory reset is complete, you can reconfigure some basic settings.

1.4 Update the software/firmware of the headset

To update the headset, Yealink uses the Yealink USB Connect program. If you want to update your headset firmware, follow the steps below.

• Install Yealink USB Connect on your computer.
• Use the USB cable to connect the base station to your computer. Use the USB port on the bottom of the base station. If you're using the Webphone or another softphone, the cables are already properly connected.
• Choose the update option to update the headset.
• Keep the Yealink USB Connect program on your computer. Yealink frequently releases new updates that make it easier to solve your future problems.

1.4.1 The Yealink headset stops during the update: Recovery mode.

You're updating your Yealink headset, but during the update the headset stopped and now you can only update through recovery mode.

Recovery Mode

Because your headset abruptly stopped downloading, there's a recovery mode option that Yealink now indicates. Follow these steps and try to update your headset this way.

Recovery mode also stops abruptly

• Remove and plug in the power cable five times. If successful, it should start with recovery mode. Not successful? Continue reading.
• Is there a possibility to update the Yealink on another PC? This has solved the problem so far. If all goes well, you should be able to update your headset through the automatic option. If this doesn't work, please contact us using the form below.

1.5 Other issues

If you have any of the issues below, first go through steps A to D. This can solve these problems.

1.5.1 The audio from my headset is soft

If you still don't have good sound with your headset after using the buttons on your device, you can increase the audio volume in the web interface of your Yealink. Please note that for this to work, the headset must be on the latest firmware.

Adjusting the audio in your Yealink device

If this hasn't helped, you can increase the audio volume in the web interface of your Yealink.

How do you access the web interface of your device?

Finding the IP address of the device

• Press the OK button or
• Go to the menu of the phone.
• Select Status.
• Go (on a computer that is in the same network as the phone) to the IP address of the phone in a web browser. Note! Use https://
• Log in with the username admin and the password admin.

• Go to the tab Features.
• Choose Audio.
• Go to headset send volume. Currently, the audio is set to 0, which is the default value.
• Setting it to -50 will turn off the headset audio.
• Setting it to +50 will set the audio to its loudest (don't set it to +50 immediately. This can be very loud).
• Find a value that provides the right sound for you.
• Press Confirm each time you make an adjustment.

Make sure you are not on a call with your Yealink when making adjustments. If you are, your new settings might not be saved.

1.5.2 The 'Out of Range' message is displayed

If the Yealink headset indicates that the headset is 'out of range', this can be resolved using the steps below:

1. Check the distance between the headset and the base station. Make sure you are within range (maximum 100 meters in open space and maximum 50 meters with obstructions such as walls).
2. Check if the headset is correctly paired with the base station. To pair the headset to the base station, place the headset on the base station (same as charging the headset). You can pair the headset on the display of the base station.
3. Check if the base station is connected to the power supply and the screen is displaying an image.
4. Try restarting the headset by disconnecting it from the power supply and reconnecting it after 10 seconds.

1.5.3 The audio drops (occasionally) during calls

What is very important is that you have followed the chapters above. There is a good chance this will solve the problem.

If you are using our Webphone, make sure you check if the audio settings in your laptop are correctly configured. And before you continue, also check if your microphone is unmuted.

Frequency interference

It's possible that the frequency of your headset is being intercepted by other devices. It's important to know that DECT technology was designed to ensure that this interference from other devices should not occur. However, in some situations, it still happens.

To see if this is the cause, you can try the following:

• Move as many devices away from your headset as possible or temporarily turn them off. Alternatively, take the headset to a location where there are no other devices nearby or where there are devices that you can more easily turn off or move.
• Does the problem persist? You don't need to be in the same room as the device causing these interferences. Even a device from your neighbor can cause this. If you have a chance to sit in a different location, try that out.

2. Settings

2.1 I want the ringtone to play on the Yealink headset and/or phone

The ringtone can be played through the speaker of your phone and/or a Yealink headset. We'll explain how to adjust this on this page.

To adjust the setting, you first need to log in to the web interface of your phone. How do you access the web interface of your device?

Finding the IP address of the device

• Press the OK button or
• Go to the menu of the phone.
• Select Status.
• Go (on a computer that is in the same network as the phone) to the IP address of the phone in a web browser. Note! Use https://
• Log in with the username admin and the password admin.

• Go to the tab Features.
• Choose Audio.
• Go to Ringer Device for Headset and select your preferred setting. You can choose between 'Use Speaker', 'Use Headset' and 'Use Headset & Speaker'
• Press Confirm after making an adjustment.

Make sure you're not on a call with your Yealink when making adjustments. If you are, your new settings might not be saved.

2.2 Can I answer/end a call from the headset?

You can answer and end calls via the button on the ear cup of the headset. This is only possible if you combine the headset with a supported Yealink device. When using a softphone, such as the webphone, you cannot answer calls from the headset. We are working to make this available, but we haven't set a date for this yet.

2.3 Can I connect the headset to the device via Bluetooth?

The Yealink WH66 headset can be paired via Bluetooth to a Bluetooth-capable Yealink device.

2.4 How can I adjust the headset settings?

For adjusting settings or updating the headset, Yealink uses the Yealink USB Connect program.

1. Install Yealink USB Connect on your computer.
2. Use the USB cable from your base station to connect the PC connection of your base station to a USB port on your computer. You can find the PC connection on the bottom of the base station.

It's recommended to install this on your PC because you can always download the latest firmware for your headset. This helps prevent problems. Back to top ↑