Yealink SIP-T53W Administrator's Guide

Phone Provisioning
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If you change this parameter, the phone will reboot to make the change take effect.
Supported Provisioning Server Discovery Methods
After the phone has established network settings, it must discover a provisioning server to obtain software updates
and configuration settings.
The IP phone supports the following methods to discover the provisioning server address:
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Zero Touch: Zero Touch feature guides you to configure network settings and the provisioning server address
via the phone user interface after startup.
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PnP: PnP feature allows the phones to discover the provisioning server address by broadcasting the PnP
SUBSCRIBE message during startup.
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DHCP: DHCP option can be used to provide the address or URL of the provisioning server to phones. When the
IP phone requests an IP address using the DHCP protocol, the resulting response may contain option 66 (for
IPv4)/option 59 (for IPv6) or the custom option (if configured) that contains the provisioning server address.
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Static: You can manually configure the server address via the phone user interface or web user interface.
Topics
Zero Touch Provision Configuration
PnP Provision Configuration
DHCP Provision Configuration
Static Provision Configuration
Zero Touch Provision Configuration
The following table lists the parameters you can use to configure the Zero Touch provision.
Parameter
static.zero_touch.enable <y0000000000xx>.cfg
Description
It enables or disables the zero touch for the phone to configure the network parameters and pro-
visioning server address via the phone user interface during startup.
Permitted
Values
0-Disabled
1-Enabled
Default
0
Web UI
Settings > Auto Provision > Zero Active
Parameter
static.zero_touch.wait_time <y0000000000xx>.cfg
Description
It configures the duration time (in seconds) for the phone to display Zero Touch screen during startup.
Permitted
Values
Integer from 1 to 100
Default
5
Web UI
Settings > Auto Provision > Wait Time(1~100s)
Parameter
static.zero_touch.network_fail_wait_times <y0000000000xx>.cfg
Description
It configures the reconnection times when zero touch module fails to obtain network parameters.
Permitted
Values
Integer from 1 to 2147483646
Default
8
Parameter
static.zero_touch.network_fail_delay_times <y0000000000xx>.cfg
Description
It configures the duration time (in milliseconds) of every reconnection when zero touch module fails to
obtain network parameters.

Yealink SIP-T53W Specifications

General

Mounting	Desk/Wall
Handset type	Wired handset
Product type	IP mobile phone
Product color	Gray
Keypad illumination	Yes
Wi-Fi standards	802.11a, 802.11g, Wi-Fi 4 (802.11n)
Bluetooth version	4.2
Security algorithms	AES, HTTPS, SIPS
Networking standards	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	8 lines
Phonebook capacity	1000 entries
Number of VoIP accounts	12
AC adapter input voltage	100 - 240 V
AC adapter output current	1.2 A
AC adapter output voltage	5 V
Power consumption (typical)	2.3 W
Volume control	Buttons
Number of programmable keys	8
Storage temperature (T-T)	-30 - 70 °C
Operating temperature (T-T)	0 - 40 °C
Operating relative humidity (H-H)	10 - 95 %
Display diagonal	3.7 \
Display resolution	360 x 160 pixels
Cables included	LAN (RJ-45)
Number of handles included	1 pc(s)
Number of DECT wireless handsets	4
Voice codecs	G.722, G.723.1, G.726, G.729A, G.729B, OPUS, iLBC

Weight and Dimensions

Depth	210.6 mm
Width	212 mm
Height	174.5 mm