Yealink SIP-T57W Administrator's Guide

Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series/CP920 IP Phones
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Description
It enables or disables the call waiting feature.
Permitted
Values
0-Disabled, a new incoming call is automatically rejected by the phone with a busy message during a
call.
1-Enabled, the phone screen will present a new incoming call during a call.
Default
1
Web UI
Features > General Information > Call Waiting
Phone UI
Menu > Features > Call Waiting > Call Waiting
Parameter
call_waiting.tone <y0000000000xx>.cfg
Description
It enables or disables the phone to play the call waiting tone when the phone receives an incoming
call during a call.
Note: It works only if “call_waiting.enable” is set to 1 (Enabled).
Permitted
Values
0-Disabled
1-Enabled
Default
1
Web UI
Features > Audio > Call Waiting Tone
Phone UI
Menu > Features > Call Waiting > Play Tone
Parameter
call_waiting.on_code <y0000000000xx>.cfg
Description
It configures the call waiting on code.
The phone will send the code to activate call waiting on server-side when you activate it on the
phone.
Permitted
Values
String within 32 characters
Default
Blank
Web UI
Features > General Information > Call Waiting On Code
Phone UI
Menu > Features > Call Waiting > On Code
Parameter
call_waiting.off_code <y0000000000xx>.cfg
Description
It configures the call waiting off code.
The phone will send the code to deactivate call waiting on server-side when you deactivate it on the
phone.
Permitted
Values
String within 32 characters
Default
Blank
Web UI
Features > General Information > Call Waiting Off Code
Phone UI
Menu > Features > Call Waiting > Off Code
Do Not Disturb (DND)
DND feature enables the phone to reject all incoming calls automatically when you do not want to be interrupted.
You can choose to implement DND locally on the phone or on the server-side.

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