Yealink SIP-T57W Administrator's Guide

Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series/CP920 IP Phones
485
Permitted
Values
0-Disabled
1-Enabled, the phone will subscribe to the value of the Voice Mail dsskey from the server. When there
are unread voice messages, the dsskey LED indicator flashes or the dsskey icon indicates the num-
ber of unread messages.
Default
0
Supported
Devices
T57W, T54W, T53W, T53, T48U, T46U, T43U, T42U, T48S, T46S, T42S, T41S and T27G
Related
Parameters
phone_setting.mail_power_led_flash_enable
features.voice_mail_popup.enable
[1]
X is the account ID. For T57W/T54W/T48U/T48S/T48G/T46U/T46S/T46G/T29G, X=1-16; for
T53W/T53/T43U/T42G/T42U/T42S, X=1-12; for T41P/T41S/T27G, X=1-6; for T40P/T40G/T23P/T23G, X=1-3; for T21
(P) E2, X=1-2; for T19(P) E2/CP920, X=1.
Short Message Service (SMS)
Yealink phones (except CP920 phones) support short message service (SMS). It allows users to send and receive
a text message on the support server.
By default, SMS is enabled. You can use SMS at the path: Menu > Message > Text Message. You can also disable
SMS.
Topic
SMS Configuration
SMS Configuration
The following table lists the parameter you can use to configure SMS.
Parameter
features.text_message.enable <y0000000000xx>.cfg
Description
It enables or disables the phone to send and receive a text message.
Permitted
Values
0-Disabled
1-Enabled
Default
1
Supported
Devices
All phones except CP920
XML Browser
XML browser simply means that the phone screen display can be managed by external applications. The XML
browser feature allows users to develop and deploy custom services which meet user’s functional requirements on
the server. Users can customize practical applications, such as weather report, stock information, Google search,
news service, and so on.
To use the XML browser feature, you must configure an XML browser key in advance.
For more information on XML browser, refer to Yealink IP Phones XML Browser Developer's Guide.
Topic
XML Browser Configuration
XML Browser Configuration
The following table lists the parameters you can use to configure XML browser.

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