Yealink SIP-T4X Administrator's Manual page 27

For SIP-T42G/T41P:
Note
Wireless headset adapter EHS36 and Bluetooth USB dongle should be purchased
separately.
For more information on how to use the EHS36 on the IP phone, refer to
User Guide.
Bluetooth can only be used on the SIP-T48G and SIP-T46G IP phones. For more information
on how to use the Bluetooth on SIP-T48G/T46G IP phones, refer to
Dongle BT40 User Guide
EXT port on SIP-T48G/T46G IP phones can also be used to connect the expansion module
EXP40. For more information on how to connect the EXP40, refer to
Guide
.
3) Connect the network and power:
AC power

Power over Ethernet (PoE)

AC Power
To connect the AC power and network:
1. Connect the DC plug of the power adapter to the DC5V port on IP phones and
connect the other end of the power adapter into an electrical power outlet.
2. Connect the included or a standard Ethernet cable between the Internet port on IP
phones and the one on the wall or switch/hub device port.
.
Getting Started
Yealink EHS36
Yealink Bluetooth USB
Yealink EXP40 User
11