Yealink SIP-T20 User Manual page 23

If your phone is already installed, proceed to
This section introduces how to install the phone:
1) Attach the stand
2) Connect the handset and optional headset
3) Connect the network and power
1 ) A t tach t he Stand
2 ) Connect the Handset and optional Headset
Not e
A headset is not included in the packaging contents. Contact your system administrator
for more information.
3 ) Connect the Network and Power
You have two options for power and network connections. Your system administrator will
advise you which one to use.
AC power

Power over Ethernet (PoE)

Phone Initialization on page 13.
Getting Started
11