User Guide for T5 Series IP Phones 
200 
Procedure: 
1.  Click Features->General Information. 
2.  Select Enabled from the pull-down list of Dual Headset. 
 
3.  Click Confirm. 
Connecting to the Wireless Network 
You can use Wi-Fi USB dongle WF40 to wirelessly connect SIP-T29G/T27G IP phone to available 
wireless networks. 
Wi-Fi mode is configurable via web user interface at the path Network->Wi-Fi. 
Connecting the Wi-Fi USB Dongle WF40 
Procedure: 
Insert the Wi-Fi USB Dongle WF40 into the USB port on the back of the phone. 
For more information on WF40, see the Wi-Fi USB dongle WF40 user guide on Yealink Technical 
Support page.