Yealink SIP-T57W Administrator's Guide

Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series/CP920 IP Phones
126
Permitted
Values
-1-Do not modify the configuration.
0-Disabled, the backlight will be turned off after the handset is idle for about 10 seconds.
1-Enabled, the backlight will be turned off after the handset is idle for about 30 minutes.
Default
-1
Supported
Devices
W53H, W56H
Handset UI
OK > Settings > Display > Display Backlight > In Charger
Parameter
custom.handset.backlight_out_of_charger.enable <y0000000000xx>.cfg
Description
It enables or disables the handset backlight to be on for about 30 minutes when it is not charged.
Note: It will take effect on all handsets that are registered on the same phone. It works only if “stat-
ic.auto_provision.handset_configured.enable” is set to 1 (Enabled).
Permitted
Values
-1-Do not modify the configuration.
0-Disabled, the backlight will be turned off after the handset is idle for about 10 seconds.
1-Enabled, the backlight will be turned off after the handset is idle for about 30 minutes.
Default
-1
Supported
Devices
W53H, W56H
Handset UI
OK > Settings > Display > Display Backlight > Out Of Charger
Handset Keypad Light
You can enable the handset keypad light to light up the keypad when any key is pressed. This helps you dis-
tinguish keys from each other in a dark environment.
Topic
Handset Keypad Light Configuration
Handset Keypad Light Configuration
The following table lists the parameter you can use to configure the handset keypad light.
Parameter
custom.handset.keypad_light.enable <y0000000000xx>.cfg
Description
It enables or disables the handset to turn on the keypad light (digital key, # key, * key, TRAN key, and
Mute key) when any key is pressed.
Note: It will take effect on all handsets that are registered to the same phone. It works only if “stat-
ic.auto_provision.handset_configured.enable” is set to 1 (Enabled).
Permitted
Values
0-Disabled
1-Enabled
Default
1
Supported
Devices
W53H, W56H
Handset UI
OK > Settings > Display > Keypad LED

Yealink SIP-T57W Specifications

General

Mounting	Desk/Wall
Handset type	Wired handset
Product type	IP Phone
Product color	Gray
Ethernet LAN	Yes
Wi-Fi standards	802.11a, 802.11b, 802.11g, Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac)
Security algorithms	AES, HTTPS, MD5, SRTP
Networking standards	IEEE 802.11a, IEEE 802.11ac, IEEE 802.11b, IEEE 802.11g, IEEE 802.11n, IEEE 802.1p, IEEE 802.1x, IEEE 802.3af
Ethernet LAN interface type	Gigabit Ethernet
Supported network protocols	FTP/TFTP/HTTP/HTTPS
Dual-Tone Multi-Frequency (DTMF) modes	In-band, Out-of band, SIP info
USB 2.0 ports quantity	1
Ethernet LAN (RJ-45) ports	2
Lines quantity	- lines
Phonebook capacity	1000 entries
Number of VoIP accounts	16
AC adapter input voltage	100 - 240 V
AC adapter output current	2 A
AC adapter output voltage	5 V
Volume control	Buttons
Operating temperature (T-T)	0 - 40 °C
Operating relative humidity (H-H)	10 - 95 %
Display diagonal	7 \
Display resolution	800 x 480 pixels
Front camera	No
Cables included	LAN (RJ-45)
Number of handles included	1 pc(s)
Voice codecs	G.722, G.723.1, G.726, G.729A, G.729B, iLBC

Weight and Dimensions

Depth	220 mm
Width	259.4 mm
Height	211 mm