How can I find the basic information of the device, such as IP address and firmware version?

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• How to obtain the Yealink phone's IP address

  T4 series without touchscreen Press the Menu button. Use the phone's directional pad to select Status. Make note of the IPv4 address. T4 series with a touchscreen Tap Menu on the home screen. T4 series with a touchscreen: Tap Status. Make note of the ...

• Using a Bluetooth headset with a Yealink device

  To activate the Bluetooth mode: 1. Press Menu >Basic >Bluetooth. 2. Press < or > , or the Switch soft key to select On from the Bluetooth field. 3. Press the Save soft key to accept the change. You can verify this by checking for the Bluetooth Icon ...

• Device doesn't play dial tone

  Check for any loose connections and that the phone has been installed properly. Switch between the handset, headset (if present) and speakerphone to check whether the dial tone works for a different audio device. If the dial tone exists on another ...

• How to I reboot the device?

  You can reboot the device to resync it with the provisioning server. To reboot a Yealink phone, you can press and hold the X button for at least 10 seconds Press and hold the X button, which is located under the Arrow Cluster A prompt will appear ...

• How to Disable SIP ALG on Popular Routers

  SIP ALG (Application Layer Gateway) is a mechanism found in most routers that rewrites packets transmitted across the device. Certain protocols are processed by the application layer gateway (ALG) and rewritten to allow better flow through a firewall ...