Yealink SIP-T57W Administrator's Guide

Phone Customization
227
It is not applicable to color screen phones.
Topics
Custom Logo Picture Limit
Customizing a Logo Picture
Custom Logo Configuration
Example: Setting a Custom Logo Display
Custom Logo Picture Limit
The following table lists the supported logo picture format and resolution for each phone model.
Phone Model Logo File Format Resolution
T42U/T42S/T42G/T41P/T41S
.dob
<=192*64 2 gray scale
T53W/T53/T43U <=360*160 2 gray scale
T27G <=240*120 2 gray scale
T40P/T40G/T23P/T23G/T21(P) E2/T19(P) E2 <=132*64 2 gray scale
CP920 <=248*120 2 gray scale
Note: Before uploading your custom logo to phones, ensure your logo file is correctly formatted.
Customizing a Logo Picture
Yealink phones only support the *.dob format logo picture. Yealink provides PictureExDemo tool to convert *.bmp
format to *.dob format. You can ask the distributor or Yealink FAE for the PictureExDemo tool.
Procedure
1.
Double click the PictureExDemo.exe.
2. Click Add button to open a *.bmp file.
You can repeat step 2 to add multiple original picture files.

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