Yealink SIP-T41S Administrator's Guide

Phone Customization
207
Parameter
features.blf_active_backlight.enable <y0000000000xx>.cfg
Description
It enables or disables the phone to turn on the backlight or stop the screen saver when the BLF/BLF
list status changes.
Permitted
Values
0-Disabled
1-Enabled
Default
1
Supported
Devices
All phones except T19(P) E2 and CP920
Adding a Screensaver Picture from a USB Flash Drive
The T57W/T54W/T48U/T48S/T48G/T46U/T46S/T46G/T29G IP phone enables you to add a screensaver picture
from a USB flash drive on their phones. You can navigate to Menu > USB > Browse Photo, preview pictures, and
then set the desired picture as a screensaver. After you set a picture in USB flash drive as a screensaver, the pic-
ture is added to the Screensaver list.
Note: Yealink phones support USB flash drive in FAT32 or NTFS format.
Related Topic
Custom Screensaver Picture Limit
Deleting a Screensaver Picture
You can delete the uploaded custom pictures for a specific IP phone via the web user interface at the path: Settings
> Preference, select Custom from the Screensaver Type field, and then select a desired custom picture from the
Screensaver field, click Del (Delete). You can only delete the custom pictures.
Backlight
You can change the backlight brightness of the phone screen during phone activity and inactivity. The backlight
brightness automatically changes when the phone is idle for a specified time. It is not available on T19(P) E2
phones.
You can change the screen backlight brightness and time in the following settings:
Active Level: The brightness level of the LCD screen when the phone is active. Digits (1-10) represent different
brightness levels. 10 is the brightest level.
Inactive Level: The brightness of the LCD screen when the phone is inactive. You can select a low brightness or
turn off the backlight.
Backlight Time: The delay time to change the brightness of the LCD screen when the phone is inactive. Backlight
time includes the following settings you can choose from:
l
Always On: Backlight is on permanently.
l
Always Off: Backlight is off permanently. It is not available for the
T57W/T54W/T48U/T48S/T48G/T46U/T46S/T46G/T29G IP phone.
l
15s, 30s, 1min, 2min, 5min, 10min or 30min: Backlight is changed when the phone is inactive after the des-
ignated time (in seconds).
Topics
Supported Backlight Options
Backlight and Time Configuration

Yealink SIP-T41S Specifications

General

Mounting	Desk/Wall
Handset type	Wired handset
Product type	IP Phone
Product color	Black
Keypad illumination	Yes
Wi-Fi	No
Networking standards	IEEE 802.3af
Ethernet LAN data rates	10, 100 Mbit/s
Ethernet LAN interface type	Fast Ethernet
Supported network protocols	SIP v1, SIP v2, LLDP/CDP/DHCP, OpenVPN, IEEE802.1X, IPv6, FTP/TFTP/HTTP/HTTPS
Volume control	Digital
Number of programmable keys	6
Lines quantity	6 lines
Phonebook capacity	1000 entries
Dual-Tone Multi-Frequency (DTMF) modes	In-band, Out-of band, SIP info
Input frequency	50/60 Hz
AC adapter input voltage	100 - 240 V
AC adapter output current	1.2 A
AC adapter output voltage	5 V
Display diagonal	2.7 \
Display resolution	192 x 64 pixels
Operating temperature (T-T)	-10 - 50 °C
Operating relative humidity (H-H)	10 - 95 %
Voice codecs	CNG, G.711Mu, G.711a, G.723.1, G.726, G.729ab, VAD, iLBC
Certification	CE
Cables included	LAN (RJ-45)
Number of handles included	1 pc(s)
Harmonized System (HS) code	85171800

Weight and Dimensions

Depth	189 mm
Width	212 mm
Height	175 mm
Package depth	223 mm
Package width	246 mm
Package height	120 mm