Yealink SIP-T53W Administrator's Guide

Call Features
402
(Phone) (except T19(P) E2/CP920 phones). DND activated on the IP phone deactivates the local No
Answer Forward settings.
Permitted
Values
0-Off
1-On, incoming calls are forwarded to the destination number (configured by the parameter “for-
ward.no_answer.target”) after a period of ring time.
Default
0
Web UI
Features > Forward&DND > Forward > No Answer Forward > On/Off
Phone UI
Menu > Features > Call Forward > No Answer Forward > No Answer Forward
Parameter
forward.no_answer.target <y0000000000xx>.cfg
Description
It configures the destination number of the no answer forward on a phone basis.
Note: It works only if “features.fwd.allow” is set to 1 (Enabled) and “features.fwd_mode” is set to 0
(Phone) (except T19(P) E2/CP920 phones).
Permitted
Values
String within 32 characters
Default
Blank
Web UI
Features > Forward&DND > Forward > No Answer Forward > Target
Phone UI
Menu > Features > Call Forward > No Answer Forward > Forward to
Parameter
forward.no_answer.timeout <y0000000000xx>.cfg
Description
It configures ring times (N) to wait before forwarding incoming calls.
The incoming calls will be forwarded when not answered after N*M (M is configurable by “phone_set-
ting.ring_duration”) seconds.
Note: It works only if “features.fwd.allow” is set to 1 (Enabled) and “features.fwd_mode” is set to 0
(Phone) (except T19(P) E2/CP920 phones).
Permitted
Values
Integer from 0 to 20 (determined by “features.forward.no_answer.show_ring_times”)
Default
2
Web UI
Features > Forward&DND > Forward > No Answer Forward > After Ring Time (0~120s)
Phone UI
Menu > Features > Call Forward > No Answer Forward > After Ring Time
Parameter
features.forward.no_answer.show_ring_times <y0000000000xx>.cfg
Description
It configures the permitted values of the ring times (N) to wait before forwarding incoming calls.
Example:
features.forward.no_answer.show_ring_times = 0,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19
Note: It works only if “forward.no_answer.enable” or “account.X.timeout_fwd.enable” is set to 1
(Enabled).
Permitted
Values
String within 512 characters
Default
0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20 (1 is not applicable to BroadSoft users)
Parameter
phone_setting.ring_duration <y0000000000xx>.cfg
Description
It configures the interval (in seconds) of the ring for the no answer forward feature.
Note: It works only if “forward.no_answer.enable” or “account.X.timeout_fwd.enable” is set to 1

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