Yealink SIP-T33 User Manual page 5

1. Getting started
You may need to provide a local
power source to your phone. Your IT
administrator can help you with this.
Connect the Ethernet cable
On the back of the phone are 2 network ports Connect your Ethernet cable in the internet port
on the phone and a network port (either on an in-line power switch/hub for power over
Ethernet or in your network if you are using a separate power adapter).
If you're not sure how to do this, check with your IT administrator.
Network lead Power adapter DC 5V (not supplied)