Yealink SIP-T57W Administrator's Guide

Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series/CP920 IP Phones
401
Values
1-On, incoming calls are forwarded to the destination number (configured by the parameter “for-
ward.busy.target”) when the callee is busy.
Default
0
Web UI
Features > Forward&DND > Forward > Busy Forward > On/Off
Phone UI
Menu > Features > Call Forward > Busy Forward > Busy Forward
Parameter
forward.busy.target <y0000000000xx>.cfg
Description
It configures the destination number of the busy 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 > Busy Forward > Target
Phone UI
Menu > Features > Call Forward > Busy Forward > Forward to
Parameter
forward.busy.on_code <y0000000000xx>.cfg
Description
It configures the busy forward on code to activate the server-side busy forward feature.
The phone will send the busy forward on code and the pre-configured destination number (configured
by the parameter “forward.busy.target”) to the server when you activate the busy forward feature 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 > Busy Forward > On Code
Phone UI
Menu > Features > Call Forward > Busy Forward > On Code
Parameter
forward.busy.off_code <y0000000000xx>.cfg
Description
It configures the busy forward off code to deactivate the server-side busy forward feature.
The phone will send the busy forward off code to the server when you deactivate the busy forward fea-
ture 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 > Busy Forward > Off Code
Phone UI
Menu > Features > Call Forward > Busy Forward > Off Code
Parameter
forward.no_answer.enable <y0000000000xx>.cfg
Description
It triggers the no answer forward feature to on or off 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

Yealink SIP-T57W Specifications

General

Mounting	Desk/Wall
Handset type	Wired handset
Product type	IP Phone
Product color	Gray
Ethernet LAN	Yes
Wi-Fi standards	802.11a, 802.11b, 802.11g, Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac)
Security algorithms	AES, HTTPS, MD5, SRTP
Networking standards	IEEE 802.11a, IEEE 802.11ac, IEEE 802.11b, IEEE 802.11g, IEEE 802.11n, 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	- lines
Phonebook capacity	1000 entries
Number of VoIP accounts	16
AC adapter input voltage	100 - 240 V
AC adapter output current	2 A
AC adapter output voltage	5 V
Volume control	Buttons
Operating temperature (T-T)	0 - 40 °C
Operating relative humidity (H-H)	10 - 95 %
Display diagonal	7 \
Display resolution	800 x 480 pixels
Front camera	No
Cables included	LAN (RJ-45)
Number of handles included	1 pc(s)
Voice codecs	G.722, G.723.1, G.726, G.729A, G.729B, iLBC

Weight and Dimensions

Depth	220 mm
Width	259.4 mm
Height	211 mm