Yealink SIP-T40G Administrator's Guide

Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series/CP920 IP Phones
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The parameters in the newly downloaded configuration files will override the same parameters in files downloaded
earlier.
Note: For the phone running firmware version 82 or earlier, it downloads configuration files referenced in the boot
file in sequence.
For the phone running firmware version 83 or later, “static.specific_model.excluded_mode” determines which con-
figuration files referenced in the boot file to be downloaded.
Provisioning Methods
Yealink provides two ways to provision your phones:
l Manual Provisioning: provisioning via the local phone user interface or web user interface.
l Central Provisioning: provisioning through configuration files stored in a central provisioning server.
The method you use depends on how many phones need to be deployed and what features and settings to be con-
figured. Manual provisioning on the web or phone user interface does not contain all of the phone settings avail-
able with the centralized method. You can use the web user interface method in conjunction with a central
provisioning method and phone user interface method. We recommend using centralized provisioning as your
primary provisioning method when provisioning multiple phones.
Topics
Provisioning Methods Priority
Web User Interface
Phone User Interface
Central Provisioning
Viewing Configurations Configured via Different Provisioning Methods

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