Yealink SIP-T40G Administrator's Guide

Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series/CP920 IP Phones
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Parameter
features.reset_by_long_press_enable <y0000000000xx>.cfg
Description
It enables or disables the phone to reset to factory by long pressing OK/√key.
Permitted
Values
0-Disabled
1-Enabled
Default
1
Parameter
features.factory_pwd_enable <y0000000000xx>.cfg
Description
It enables or disables the phone to prompt for the administrator password when you long press the
OK/√key to perform a factory reset on the idle screen.
Permitted
Values
0-Disabled
1-Enabled
Default
0
Case Scen-
ario
Reset the phone to factory in the User mode
Set the following:
features.factory_pwd_enable = 0
static.security.var_enable = 1
When the phone is in the User mode, users can reset the phone to factory settings by long pressing
the OK/√key.
Resetting the IP phone to Default Factory Settings
Procedure
1. Click Settings > Upgrade.
2. Click Reset to Factory in the Reset to Factory field.
The web user interface prompts the message “Do you want to reset to factory?”.
3. Click OK to confirm the resetting.
The phone will be reset to factory successfully after startup.
Note: Reset of your phone may take a few minutes. Do not power off until the phone starts up successfully.
Resetting the IP phone to Custom Factory Settings
After you enable the custom factory feature, you can import the custom factory configuration file, and then reset the
IP phone to custom factory settings.
Procedure
1. From the web user interface, click Settings > Configuration.
2. In the Import Factory Config block, click Browse to locate the custom factory configuration file from your local
system.
3. Click Import.
4.
After the custom factory configuration file is imported successfully, you can reset the IP phone to custom factory
settings.
Topic
Custom Factory Configuration
Custom Factory Configuration
The following table lists the parameters you can use to configure a custom factory.

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