Yealink SIP-T53W Administrator's Guide

Advanced Features
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For T57W/T48U/T48S/T48G phones, the BLF/BLF List DSS key field displays a green icon for 1000ms
and then turns to white.
For other phones, the BLF/BLF list DSS key LED glows green for 1000ms and then goes out.
Note: It works only if “blf.enhanced.callout.enable” is set to 1 (Enabled).
Permitted
Values
String
Default
Blank
Supported
Devices
All phones except T19(P) E2 and CP920
Parameter
blf.enhanced.callout.callin.action <y0000000000xx>.cfg
Description
It configures the behavior when pressing the BLF/BLF list DSS key if the monitor is ringing and mon-
itored user is calling out.
Note: It works only if “blf.enhanced.callout.enable” is set to 1 (Enabled).
Permitted
Values
String
Default
Blank
Supported
Devices
All phones except T19(P) E2 and CP920
Parameter
blf.enhanced.callout.talking.action <y0000000000xx>.cfg
Description
It configures the behavior when pressing the BLF/BLF list DSS key if the monitor is talking and mon-
itored user is calling out.
Note: It works only if “blf.enhanced.callout.enable” is set to 1 (Enabled).
Permitted
Values
String
Default
Blank
Supported
Devices
All phones except T19(P) E2 and CP920
Parameter
blf.enhanced.callout.idle.action <y0000000000xx>.cfg
Description
It configures the behavior when pressing the BLF/BLF list DSS key if the monitor is idle and monitored
user is calling out.
Note: It works only if “blf.enhanced.callout.enable” is set to 1 (Enabled).
Permitted
Values
String
Default
Blank
Supported
Devices
All phones except T19(P) E2 and CP920
BLF Key LED/Icon and Behavior for Talking State Configuration
The following table lists the parameters you can use to configure BLF key LED/icon and Behavior for talking state
(the monitored user is talking).
Parameter
blf.enhanced.talking.enable <y0000000000xx>.cfg
Description
It enables or disables the custom configuration when the monitored user is talking.
Permitted
Values
0-Disabled

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