Yealink SIP-T53W Administrator's Guide

Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series/CP920 IP Phones
381
Note: It works only if “features.direct_ip_call_enable" is set to 1 (Enabled). The phone cannot auto-
matically answer the incoming IP call when the IP phone is in a call or dialing even if IP call auto
answer is enabled.
Permitted
Values
0-Disabled
1-Enabled, the phone can automatically answer the IP call.
Default
0
Web UI
Features > General Information > IP Direct Auto Answer
Parameter
features.auto_answer.first_call_only <y0000000000xx>.cfg
Description
It enables or disables the phone to only automatically answer the incoming call when the phone is
idle.
Note: It works only if “account.X.auto_answer” or “features.ip_call.auto_answer.enable” is set to 1
(Enabled).
Permitted
Values
0-Disabled. If there is an incoming call arrived when the phone is in a call or dialing, the phone will
automatically answer after you end the current call or cancel the dialing.
1-Enabled. The phone can only automatically answer the incoming call arrived when the phone is
idle. If there is an incoming call arrived when the phone is in a call or dialing, you have to manually
pick up the incoming call.
Default
1
Parameter
features.auto_answer_delay <y0000000000xx>.cfg
Description
It configures the delay time (in seconds) before the phone automatically answers an incoming call.
Note: For the call coming from a SIP account, it works only if “account.X.auto_answer” is set to 1
(Enabled).
Permitted
Values
T48G/T46G/T42G/T41P/T29G:
Integer from 1 to 4
Other Phones:
Integer from 1 to 60
Default
1
Web UI
Features > General Information > Auto Answer Delay
Parameter
features.auto_answer_tone.enable <y0000000000xx>.cfg
Description
It enables or disables the phone to play a warning tone when an incoming call is automatically
answered.
Note: For the call coming from a SIP account, it works only if “account.X.auto_answer” is set to 1
(Enabled).
Permitted
Values
0-Disabled
1-Enabled
Default
1
Web UI
Features > General Information > Enable Auto Answer Tone
Parameter
features.auto_answer.ring_type <y0000000000xx>.cfg
Description
It configures a ring tone the phone plays before the incoming call is automatically answered.
Note: It works only if “features.auto_answer_tone.enable” is set to 1 (Enabled).
Permitted
Values
0 (beep tone)

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