Yealink SIP-T57W Administrator's Guide

Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series/CP920 IP Phones
220
Black-and-white Screen Phones:
Menu > Settings > Basic Settings > Time&Date > SNTP Settings > Time Zone
Parameter
local_time.time_zone_name <y0000000000xx>.cfg
Description
It configures the time zone name.
Note: It works only if “local_time.summer_time” is set to 2 (Automatic) and the parameter “local_time.-
time_zone” should be configured in advance.
Permitted
Values
String within 32 characters
The available time zone names depend on the time zone configured by the parameter “local_time.-
time_zone”. For available time zone names, refer to Time Zone.
Default
China(Beijing)
Web UI
Settings > Time&Date > Location
Phone UI
Color Screen Phones:
Menu > Basic > Time & Date > General > SNTP Settings > Location
Black-and-white Screen Phones:
Menu > Settings > Basic Settings > Time&Date > SNTP Settings > Location
DST Settings
You can set DST for the desired area as required. By default, the DST is set to Automatic, so it can be adjusted auto-
matically from the current time zone configuration.
The time zone and corresponding DST pre-configurations exist in the AutoDST file. If the DST is set to Automatic,
the phone obtains the DST configuration from the AutoDST file.
You can customize the AutoDST file if required. The AutoDST file allows you to add or modify time zone and DST
settings for your area each year.
Topics
Auto DST File Attributes
Customizing Auto DST File
DST Configuration
Auto DST File Attributes
The following table lists the description of each attribute in the template file:
Attributes Type Values Description
szTime required [+/-][X]:[Y], X=0~14, Y=0~59 Time Zone
szZone required
String (if the content is more than one city, it is the best to keep
their daylight saving time the same)
Time Zone name
iType optional
0/1
0: DST by Date
1: DST by Week
DST time type
(This item is needed if you want
to configure DST.)
szStart optional
Month/Day/Hour (for iType=0)
Month: 1~12
Day: 1~31
Hour: 0 (midnight)~23
Month/Week of Month/Day of Week/Hour of Day/Offset Days
Starting time of the DST

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