Yealink SIP-T40G Administrator's Guide

Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series/CP920 IP Phones
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authentication.
Permitted
Values
A valid string
Default
YealinkSPIP
Parameter
sip.request_validation.event <y0000000000xx>.cfg
Description
It configures which events specified within the Event header of SUBSCRIBE or NOTIFY request
should be validated.
If it is left blank, all events will be validated.
Permitted
Values
A valid string
Default
Blank
USB Port Lock
You can lock the USB port on
T57W/T54W/T53W/T53/T48U/T48S/T48G/T46U/T46S/T46G/T43U/T42U/T42S/T41S/T29G/T27G/CP920 phones.
The following features are not available when you disable the USB port:
l Adding a Wallpaper from a USB Flash Drive
l Adding a Screensaver Picture from a USB Flash Drive
l Wi-Fi (except T57W/T54W/T53W/CP920)
l Bluetooth (except T57W/T54W/T53W/CP920)
l USB Recording
Topic
USB Port Lock Configuration
USB Port Lock Configuration
The following table lists the parameters you can use to configure the USB port lock.
Parameter
static.usb.power.enable
[1]
<y0000000000xx>.cfg
Description
It enables or disables the USB port.
Permitted
Values
0-Disabled, the phone does not provide power to the USB port and not detect USB devices attached
to the USB port. All the USB devices are disabled on the phone.
1-Enabled
Default
1
Supported
Devices
T57W, T54W, T53W, T53, T48U, T48S, T48G, T46U, T46S, T46G, T43U, T42U, T42S, T41S, T29G,
T27G, CP920
Parameter
static.usbdisk.function.enable
[1]
<y0000000000xx>.cfg
Description
It enables or disables the USB flash drive feature.
Note: It works only if "static.usb.power.enable" is set to 1 (Enabled).
Permitted
Values
0-Disabled, the phone cannot detect the USB flash drive attached to the USB port. The USB item will
not appear on the menu screen and there is no USB icon on the status bar. Only the USB flash drive
is disabled, other USB devices such as Bluetooth dongle are still available on the phone.
1-Enabled
Default
1

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