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This guide takes you through the steps required to configure your EPOS | Sennheiser headset to work with the 3CX Web Client. Using an EPOS | Sennheiser headset you can start, end, answer, redial or reject calls, manage the volume and mute the microphone. You can find more support info on the EPOS | Sennheiser website.

Download the EPOS | Sennheiser Software

1. Download for Windows or Mac: EPOS Connect / Sennheiser HeadSetup Pro.
2. Run the setup to install EPOS Connect / Sennheiser HeadSetup Pro on your PC or Mac.
3. If you are using the 3CX App for Windows you also need to download and install the 3CXPhone Plugin.
4. Restart your PC or Mac to apply the configuration changes
5. Verify that your EPOS | Sennheiser headset is connected and set as the default for audio input and output on:

• Windows: “Control Panel” > “Sound”.
• Mac: “System Preferences” > “Sound”.

⚠ Important: The integration with EPOS Connect / HeadSetup Pro may not work with the latest versions of Firefox, as these do not accept the security certificate provided by EPOS | Sennheiser. To resolve, see this guide to add an exception in Firefox Certificate Manager.

Configure the 3CX Web Client and Browser Extension

Depending on your specific model, you can integrate the EPOS | Sennheiser headset’s answer, end call and volume functions with the:

• 3CX Web Client - Go to “Settings” > “Other Options” > “Use headset integration” and select “Sennheiser”.

• 3CX Browser Extension - Go to “Settings” > “Personalize” > “Use headset integration” and select “Sennheiser”.

Verify that your specific model was detected and displayed. You can now use your EPOS | Sennheiser device to manage calls through the 3CX Web Client.

Update EPOS | Sennheiser Software on Windows

Use the EPOS | Sennheiser updater to ensure that your device is updated with the latest software. To check for available updates, select “Options” > “Check for updates” and follow the on-screen instructions to update the software for your device.

See also

• Take a look at our list with the Supported and Legacy IP phones here.
• A list of the Supported PSTN Gateways and ATA’s can be found here.
• Visit our Support page for additional help and documentation.