Yealink SIP-T57W Administrator's Guide

Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series/CP920 IP Phones
97
defaults) takes effect only if the value of this parameter is set to 1 (Enabled). If “overwrite_mode” is set
to 1 in the boot file, the value of this parameter will be set to 1 (Enabled).
Permitted
Values
0-Disabled
1-Enabled, <MAC>-local.cfg file generates and personalized non-static settings configured via the
web or phone user interface will be kept after auto provisioning.
Default
0
Parameter
static.auto_provision.custom.sync <y0000000000xx>.cfg
Description
It enables or disables the phone to upload the <MAC>-local.cfg file to the server each time the file
updates, and to download the <MAC>-local.cfg file from the server during auto provisioning.
Note: It works only if “static.auto_provision.custom.protect” is set to 1 (Enabled). The upload/download
path is configured by the parameter “static.auto_provision.custom.sync.path”.
Permitted
Values
0-Disabled
1-Enabled
Default
0
Parameter
static.auto_provision.custom.sync.path <y0000000000xx>.cfg
Description
It configures the URL for uploading/downloading the <MAC>-local.cfg file.
If it is left blank, the phone will try to upload/download the <MAC>-local.cfg file to/from the provisioning
server.
Note: It works only if “static.auto_provision.custom.sync" is set to 1 (Enabled).
Permitted
Values
URL
Default
Blank
Parameter
static.auto_provision.custom.upload_method <y0000000000xx>.cfg
Description
It configures the way the phone uploads the <MAC>-local.cfg file, <MAC>-calllog.xml file or <MAC>-
contact.xml file to the provisioning server (for HTTP/HTTPS server only).
Permitted
Values
0-PUT
1-POST
Default
0
Auto Provisioning Flowchart for Keep User’s Personalized Configuration
Settings
The following shows an auto provisioning flowchart for Yealink phones when a user wishes to keep the user’s per-
sonalized configuration settings.

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