Yealink SIP-T57W Administrator's Guide

Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series/CP920 IP Phones
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No. Function Key Usage
5 right Position the cursor.
6 up Position the cursor.
7 down Position the cursor.
8 hide Hide the onscreen keyboard.
9 shift
Switch between the uppercase input mode and the lowercase input
mode.
10 lang Change the language of the keyboard.
11 switch Change input mode.
Customizing an Ime File
1.
Open the template file.
2.
Edit the corresponding string in the file.
3.
Save the change and place this file to the provisioning server.
Layout File Elements and Attributes
The following lists the elements and attributes you need to understand in the Layout file. We recommend that you
do not edit these elements and attributes.
Elements
Description
<KeyboardLayout >
</KeyboardLayout >
Indicate the start and end of a Layout file.
<Line >
</Line >
Specify a line on the keyboard.
The first Line element represents the first line of the keyboard.
<Key >
</Key >
Specify a key on the keyboard.
The first key element in the Line element represents the first key of this line.
l The Line elements and Key elements both have four attributes: LeftIndent, TopIndent, Width, and Height (all
attribute values are in pixels). The following picture shows the meaning of four attributes:

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