Yealink SIP-T57W 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-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