Yealink SIP-T40G Administrator's Guide

Using Handsets with T57W/T54W/T53W/T53 Phones
145
Default
1
Supported
Devices
All handsets except DD phones
Parameter
over_the_air.base_trigger <y0000000000xx>.cfg
Description
It enables or disables to upgrade the handset firmware compulsively when the phone detects a new
handset firmware from the provisioning server.
Permitted
Values
0-Disabled, if “over_the_air.handset_tip” is set to 1 (Enabled), it will pop up a tip on the handset to
notify the user to confirm upgrading the firmware or not. If “over_the_air.handset_tip” is set to 0, you
may go to Settings > Upgrade Firmware on the handset to trigger the upgrading manually.
1-Enabled, it will upgrade the handset firmware compulsively without a pop-up tip on the handset.
Default
1
Parameter
over_the_air.url.w52h <y0000000000xx>.cfg
Description
It configures the access URL of the W52H handset firmware file.
Note: The priority of parameter “over_the_air.url.w52h” is higher than “over_the_air.url”.
Permitted
Values
URL within 511 characters
Default
Blank
Parameter
over_the_air.url.w53h <y0000000000xx>.cfg
Description
It configures the access URL of the W53H handset firmware file.
Note: The priority of parameter “over_the_air.url.w53h” is higher than “over_the_air.url”.
Permitted
Values
URL within 512 characters
Default
Blank

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