Yealink SIP-T48G Administrator's Manual page 160

Microsoft Lync Edition Administrator's Guide for SIP-T2_Series and T4_Series IP Phones
2. Select the desired value from the pull-down list of Boss/Admin Light.
A dialog box pops up to prompt that settings will take effect after a reboot.
3. Click Confirm to accept the change.
BToE (Better Together over Ethernet) feature enables SIP IP phones to interoperate with
the Lync client for third party call control. You can answer, place, hold and resume audio
calls with your Lync contacts on your phone and the Lync client on your PC/PAD
simultaneously.
BToE as audio device
Microsoft ® Lync™ 2013 supports audio and video in the virtual desktop infrastructure
(VDI) environment. Users can connect to the virtual machine, log into the virtual
machine running Microsoft
communication.
BToE as audio device allows IP phones to be used as an audio device in the VDI
environment when BToE is enabled. If BToE as audio device feature is disabled, you may
not hear the other party through the audio device on your phone in the VDI
environment.
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® Lync™ 2013, and participate in real-time audio and video