Yealink SIP-T53W Administrator's Guide

Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series/CP920 IP Phones
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When the phone receives an incoming call in the call state, the screen does not prompt the incoming call inform-
ation. You can perform other features on the current call. You can only answer the incoming call after ending the cur-
rent call.
Topic
Ignoring Incoming Calls Configuration
Ignoring Incoming Calls Configuration
The following table lists the parameter you can use to configure ignoring incoming calls.
Parameter
features.ignore_incoming_call.enable <y0000000000xx>.cfg
Description
It enables or disables the phone to ignore the incoming call.
Permitted
Values
0-Disabled
1-Enabled, the incoming call is still in the progress and is not rejected, the user can choose to answer
it or not, or perform other features.
Default
0
Off Hook Answering
You can set whether to answer an incoming call by picking up the handset, pressing the Speakerphone key or
pressing the HEADSET key directly.
It is not applicable to CP920 phones.
Topic
Off Hook Answering Configuration
Off Hook Answering Configuration
The following table lists the parameter you can use to configure off hook answering.
Parameter
features.off_hook_answer.enable <y0000000000xx>.cfg
Description
It enables or disables the phone to answer an incoming call by picking up the handset, pressing the
Speakerphone key or pressing the HEADSET key directly.
Permitted
Values
0-Disabled, the user needs to press the corresponding line key, the Answer soft key or the OK key to
answer an incoming call after picking up the handset, pressing the Speakerphone key or pressing the
HEADSET key.
1-Enabled

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