Yealink SIP-T53W Administrator's Guide

Call Features
412
Parameter
features.conference.local.enable <y0000000000xx>.cfg
Description
It enables or disables the local conference feature for the IP phone.
Note: It works only when “account.X.conf_type” is set to 0 (Local Conference).
Permitted
Values
0-Disabled
1-Enabled
Default
1
Parameter
features.conference.with_previous_call.enable <y0000000000xx>.cfg
Description
It enables or disables the phone to merge two calls into a conference directly by pressing the con-
ference key when there are two calls on the phone.
Permitted
Values
0-Disabled, users can select to set up a conference with the held party or a new party during multiple
calls.
1-Enabled
Default
0
Supported
Devices
All phones except CP920
Parameter
features.local_conf.combine_with_one_press.en-
able
<y0000000000xx>.cfg
Description
It enables or disables the phone to set up a three-way conference directly after the second party
answers the call.
Note: The CONF key is only applicable to T29G/T27G phones. The conference DSS key is not applic-
able to CP920 phones.
Permitted
Values
0-Disabled, the user needs to press the Conf/Conference soft key, CONF key or conference DSS key
again to set up a conference after the second party answers the call.
1-Enabled, the second party joins a conference with the first party after answering the call, both
phones play a warning tone.
Default
0
Parameter
transfer.tran_others_after_conf_enable <y0000000000xx>.cfg
Description
It enables or disables the phone to transfer the local conference call to the other two parties after the
conference initiator drops the local conference call.
Note: It works only if "account.X.conf_type" is set to 0 (Local Conference).
Permitted
Values
0-Disabled, all parties are disconnected when the conference initiator drops the conference call.
1-Enabled, the other two parties remain connected when the conference initiator drops the con-
ference call.
Default
0
Web UI
Features > Transfer > Transfer on Conference Hang up
Network Conference Configuration
Network conference, also known as a centralized conference, provides you with the flexibility of call with multiple
participants (more than three). The phones implement network conference using the REFER method specified in
RFC 4579. This feature depends on the support from a SIP server
For network conference, if any party leaves the conference, the remaining parties are still connected.
The following table lists the parameter you can use to configure the network conference.
Parameter
account.X.conf_uri
[1]
<MAC>.cfg

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