Yealink WF40 User Manual

Wi-Fi USB Dongle WF40
User Guide
Wi-Fi USB Dongle WF40 is used to connect IP phones to
the organization’s wireless network. Wi-Fi USB dongle is a
cost-effective solution for small office wireless networking,
which allows you to experience the convenience of wireless
networking.
Packaging Contents
Wi-Fi USB Dongle
User Guide
www.yealink.com
The following items are included in your package. If you find
anything missing, contact your system administrator.
Troubleshooting
Why can’t the IP phone enable Wi-Fi feature?
Why can’t the IP phone connect to Wi-Fi?
- Connect an Ethernet cable to the IP phone.
- Unplug the Wi-Fi USB dongle from the IP phone.
The IP phone toggles the Wi-Fi to off.
Ensure the Ethernet cable is removed.
Ensure the Wi-Fi USB dongle is not broken and works well.
If the network is secure, ensure the entered password is
right.
Ensure your gateway/router enables the wireless network
feature.
Reboot your gateway/router.
Turn off the Wi-Fi feature on the IP phone and then turn it
on again.
Why is the wireless signal strength low?
Ensure the IP phone and your gateway/router are within the
working range and there is no obvious interference (walls,
doors, etc) between them.
The wireless network is changed to the wired network, and
the IP phone toggles the Wi-Fi to off.
Copyright 2015 YEALINK NETWORK TECHNOLOGY CO.,LTD.
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Yealink WF40 Specifications

General

Internal	No
Component for	IP Phone
Product color	Black
Interface	WLAN
USB version	2.0
Connectivity technology	Wireless
Wi-Fi	Yes
Bandwidth	2.4 GHz
Wi-Fi standards	802.11b, 802.11g, Wi-Fi 4 (802.11n)
Top Wi-Fi standard	Wi-Fi 4 (802.11n)
Security algorithms	64-bit WEP, 128-bit WEP, 152-bit WEP, WPA2-PSK
Networking standards	IEEE 802.11b, IEEE 802.11g, IEEE 802.11n
Maximum data transfer rate	150 Mbit/s
Harmonized System (HS) code	85176990
Storage temperature (T-T)	-40 - 85 °C
Operating temperature (T-T)	0 - 50 °C

Weight and Dimensions

Depth	26.9 mm
Width	18 mm
Height	8 mm

Summary

Troubleshooting

Why can't the IP phone enable Wi-Fi feature?

Ensure the Ethernet cable is removed and the Wi-Fi USB dongle is functional.

Why can't the IP phone connect to Wi-Fi?

Verify network security, password, gateway/router settings, and restart phone Wi-Fi.

Why is the wireless signal strength low?

Ensure phone and router are within range with minimal interference.

Packaging Contents

Assembling the Wi-Fi USB Dongle

Manually Connecting the IP phone to an Available Wireless Network

Disabling Wi-Fi Feature on the IP Phone