Yealink SIP-T40G User Manual

About This Guide
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About This Guide
Thank you for choosing Yealink T4 series IP phones, which deliver the industry’s leading HD
audio quality and a wide range of business telephony features, such as Call Hold, Call Transfer,
Busy Lamp Field, Call Recording, Multicast Paging and Conference over an IP network.
Meanwhile, it features a compact appearance, robust performance and cost efficiency for daily
desktop voice communications.
This guide provides everything you need to quickly use your new phone. First, verify with your
system administrator that the IP network is ready for phone configuration. Also be sure to read
the Quick Start Guide in your phone package before you set up and use the IP phone. As you
read this guide, keep in mind that some features are configurable by your system administrator
or determined by your phone environment. As a result, some features may not be enabled or
may operate differently on your phone. Additionally, the examples and graphics in this guide
may not directly reflect what is displayed or is available on your phone screen.
This user guide contains information for the following Yealink products:
 SIP-T48S IP phones
 SIP-T48G IP phones
 SIP-T46S IP phones
 SIP-T46G IP phones
 SIP-T42S IP phones
 SIP-T42G IP phones
 SIP-T41S IP phones
 SIP-T41P IP phones
 SIP-T40G IP phones
 SIP-T40P IP phones
Read the Yealink Products Regulatory Notices guide for all regulatory and safety guidance.
Related Documentation
You can obtain additional information on the following phone's support pages:
 Ultra-elegant Gigabit IP Phone SIP-T48S
 Ultra-elegant Gigabit IP Phone SIP-T48G
 Ultra-elegant Gigabit IP Phone SIP-T46S
 Ultra-elegant Gigabit IP Phone SIP-T46G
 Ultra-elegant Gigabit IP Phone SIP-T42S
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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