Yealink SIP-T40G User Manual

User Guide for T4 Series IP Phones
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- To change the priority of the wireless network:
1) Select Move Up or Move Down to assign higher or lower priority of the
wireless network that the IP phone automatically connects to.
- To delete the saved wireless network profile:
1) Select Delete or Delete All.
If you delete your wireless network profile from your phone, you need to
manually connect to it next time.
Disconnecting the Wireless Network Connection
Procedure:
1. Navigate to Menu->Basic->Wi-Fi.
On the SIP-T42S/T41S IP phone, navigate to Menu->Settings->Basic Settings->Wi-Fi.
2. Do one of the following:
- On the SIP-T46S/T46G/T42S/T41S IP phone, highlight the X Available Network(s) (X
represents the number of available networks), and then press Enter.
Highlight the connected wireless network, and then press Disconnect.
- On the SIP-T48S/T48G IP phone, you can do one of the following:
 Tap the connected wireless network.
 Tap after the connected wireless network, and then tap Disconnect.
 Tap Known Network(s), and then tap the connected wireless network.
The wireless network is disconnected. You can press Connect to connect again.
Using an Expansion Module
The expansion module is a console you can connect to an IP phone to add additional line keys
and expand the functions of your phone. Yealink SIP-T48S/T48G/T46S/T46G IP phone supports
expansion module EXP40. It has two pages of 20 flexible ext keys and it can be programmed up
to 40 various features. This section provides you how to connect the expansion module EXP40,
how to assign the features for ext keys and how to adjust the contrast and backlight of
expansion module EXP40.
For more information on expansion module EXP40, see the LCD Expansion Module EXP40 user
guide on Yealink Technical Support page.
Connecting the Expansion Module EXP40
Procedure:
1. Connect the EXP40 expansion module to the IP phone using the supplied connecting sheet
and screws.
2. Connect the supplied cord from the Ext jack on the host phone to the Ext in jack on the
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Yealink SIP-T40G Specifications

General

Mounting	Desk/Wall
Handset type	Wired handset
Product type	IP Phone
Product color	Black
Wall mountable	Yes
Wi-Fi	No
Security algorithms	AES, HTTPS, SSL/TLS
Networking standards	IEEE 802.3af
Ethernet LAN interface type	Gigabit Ethernet
Supported network protocols	FTP, TFTP, HTTP, HTTPS
Voice codecs	G.711, G.711a, G.711u, G.722, G.726, G.729ab
RJ-11 ports quantity	1
Ethernet LAN (RJ-45) ports	2
AC adapter input voltage	100 - 240 V
AC adapter output current	0.6 A
AC adapter output voltage	5 V
Power consumption (typical)	1.6 W
Certification	CE, FCC, ISO 9001
Operating temperature (T-T)	-10 - 50 °C
Operating relative humidity (H-H)	10 - 90 %
Volume control	Digital
Display diagonal	2.3 \
Display resolution	132 x 64 pixels
Lines quantity	3 lines
Phonebook capacity	1000 entries
Number of VoIP accounts	3
Number of handles included	1 pc(s)

Weight and Dimensions

Depth	175 mm
Width	212 mm
Height	54 mm