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User Guide for the SIP-T48S IP Phone
20
3) Connect the optional USB flash drive
Note
4) Connect the power
You have two options for power 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:
1. Connect the DC plug on the power adapter to the DC5V port on the phone and connect the
other end of the power adapter into an electrical power outlet.
Note
The IP phone should be used with Yealink original power adapter (5V/2A) only. The use of the
third-party power adapter may cause the damage to the phone.
The USB flash drive should be purchased separately if required.
The USB port can also be used to connect the Bluetooth USB dongle BT40 or Wi-Fi USB dongle
WF40. The Bluetooth USB dongle BT40 and 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
.
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