Yealink SIP-T42S - Page 4

4
Quick Start Guide
Ultra-elegant Gigabit IP Phone – SIP-T42S
2. Connect the handset and optional headset, as shown below:
Note:
• The headset or wireless headset adapter EHS36 should be purchased separately.
• The EXT port can also be used to connect the expansion module EXP20. For more information on how to
use the EHS36 and EXP20, refer to Yealink EHS36 User Guide and Yealink EXP20 User Guide.
3. Connect the USB flash drive, as shown below:
Note:
• The USB port can also be used to connect Bluetooth USB dongle BT40 or Wi-Fi USB dongle WF40. The
Bluetooth USB dongle BT40 or Wi-Fi USB dongle WF40 should be purchased separately. For more
information on how to use the BT40 and WF40, refer to Yealink Bluetooth USB Dongle BT40 User Guide
and Yealink Wi-Fi USB Dongle WF40 User Guide.