Yealink SIP-T27P User Manual page 29

2) Connect the handset and optional headset
Note
The EXT port can also be used to connect an expansion module EXP20.
For more information on how to use EHS36 and EXP20, refer to
Yealink EXP20 User Guide
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 (Optional)

Power over Ethernet (PoE)

AC Power (Optional)
To connect the AC power:
Connect the DC plug on the power adapter to the DC5V port on the phone and connect the
1.
other end of the power adapter into an electrical power outlet.
Connect the included or a standard Ethernet cable between the Internet port on the phone
2.
and the one on the wall or switch/hub device port.
The IP phone should be used with Yealink original power adapter (5V/1.2A) only. The use of the
Note
third-party power adapter may cause the damage to the phone.
.
Getting Started
Yealink EHS36 User Guide
and
17