Yealink SIP-T57W Administrator's Guide

Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series/CP920 IP Phones
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DST Configuration
The following table lists the parameters you can use to configure DST.
Parameter
local_time.summer_time <y0000000000xx>.cfg
Description
It configures the Daylight Saving Time (DST) feature.
Permitted
Values
0-Disabled
1-Enabled
2-Automatic
Default
2
Web UI
Settings > Time&Date > Daylight Saving Time
Phone UI
Color Screen Phones:
Menu > Basic > Time & Date > General > SNTP Settings > Daylight Saving
Black-and-white Screen Phones:
Menu > Settings > Basic Settings > Time&Date > SNTP Settings > Daylight Saving
Parameter
local_time.dst_time_type <y0000000000xx>.cfg
Description
It configures the Daylight Saving Time (DST) type.
Note: It works only if “local_time.summer_time” is set to 1 (Enabled).
Permitted
Values
0-DST by Date
1-DST by Week
Default
0
Web UI
Settings > Time&Date > Fixed Type
Parameter
local_time.start_time <y0000000000xx>.cfg
Description
It configures the start time of the Daylight Saving Time (DST).
Note: It works only if “local_time.summer_time” is set to 1 (Enabled).
Permitted
Values
Month/Day/Hour-DST by Date, use the following mapping:
Month: 1=January, 2=February,…, 12=December
Day: 1=the first day in a month,…, 31= the last day in a month
Hour: 0=0am, 1=1am,…, 23=11pm
Month/Week of Month/Day of Week/Hour of Day, Offset Days Forward-DST by Week, use the following
mapping:
Month: 1=January, 2=February,…, 12=December
Week of Month: 1=the first week in a month,…, 5=the last week in a month
Day of Week: 1=Monday, 2=Tuesday,…, 7=Sunday
Hour of Day: 0=0am, 1=1am,…, 23=11pm
Offset Days (Optional.): -1=one day offset forward, -2-two days offset forward,..., -6-six days offset for-
ward
Default
1/1/0

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