Yealink SIP-T48G Administrator's Manual page 69

2. Make the desired change.
3. Click Confirm to accept the change.
When the "Power On" is set to On, the IP phone will check configuration files stored on
the provisioning server during startup and then will download firmware from the server.
You can update firmware of Yealink SIP-T48G/T22(P) Lync phones from Lync server. There
are two ways to update firmware from Lync server:
Automatic Update

Manual Update

Before updating firmware from Lync server, you must upload the update package
(*.CAB) to your Lync server in advance. For more information, refer to
Phone Firmware from Microsoft Lync Server,
http://www.yealink.com/DocumentDownload.aspx?CateId=142&flag=142.
available online:
Getting Started
Updating Lync
57