Yealink SIP-T40G Administrator's Guide

Security Features
104
Note: It works only if “static.security.var_enable” is set to 1 (Enabled).
Permitted
Values
0-user
1-var
2-admin
Default
0
[1]
If you change this parameter, the phone will reboot to make the change take effect.
Auto Logout Time
Auto logout time defines how long the phone will log out of the web user interface automatically when you do not
perform any actions on the web user interface. Once logging out, you must re-enter username and password for
web access authentication.
Topic
Auto Logout Time Configuration
Auto Logout Time Configuration
The following table lists the parameter you can use to configure the auto logout time.
Parameter
features.relog_offtime <y0000000000xx>.cfg
Description
It configures the timeout interval (in minutes) for web access authentication.
Permitted
Values
Integer from 1 to 1000
Default
5
Web UI
Features > General Information > Auto Logout Time(1~1000min)
Phone Lock
You can lock the IP phone to prevent it from unauthorized use. Once the IP phone is locked, anyone must enter the
password to unlock it.
Yealink phones offer three types for phone lock:
l
Lock the Menu soft key: it prevents unauthorized users from accessing the menu, changing the personal set-
tings for your phone.
l
Lock the Function keys: it only allows unauthorized users to use the keypad for placing a call, answering or
rejecting an incoming call and ending a call.
l
Lock all keys: it only allows unauthorized users to use the keypad for dialing an emergency number or author-
ized numbers that set up by your administrator, answer or reject an incoming call and ending a call. The
T57W/T48U/T48S/T48G phones only support All Keys type of phone lock.
You can set a waiting time after which the phone is locked automatically. If the waiting time is set to 0, the phone will
not be automatically locked. You need to lock the phone manually.
Note: The Volume key, HEADSET key and Speakerphone key are always available even when you lock the phone.
Topics
Operation Behaviors on Lock Phone
Phone Lock Configuration

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