Yealink SIP-T57W Administrator's Guide

Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series/CP920 IP Phones
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Password Dial
Password dial feature allows the callee number to be partly displayed on the IP phone when placing a call. The hid-
den digits are displayed as asterisks on the phone screen. The number in the placed call list is also partly displayed
on the IP phone. This feature is especially useful for users who often place important and confidential calls.
Topic
Password Dial Configuration
Password Dial Configuration
The following table lists the parameters you can use to configure password dial.
Parameter
features.password_dial.enable <y0000000000xx>.cfg
Description
It enables or disables the phone to partly display the callee number when placing a call.
Permitted
Values
0-Disabled
1-Enabled
Default
0
Web UI
Features > General Information > PswDial
Parameter
features.password_dial.prefix <y0000000000xx>.cfg
Description
It configures the prefix that the number starts with this prefix will be partially displayed.
Example:
features.password_dial.prefix = 12
Note: It works only if “features.password_dial.enable” is set to 1 (Enabled).
Permitted
Values
String within 32 characters
Default
Blank
Web UI
Features > General Information > PswPrefix
Parameter
features.password_dial.length <y0000000000xx>.cfg
Description
It configures how many digits to be displayed as asterisks.
Example:
features.password_dial.length = 3
If you set the prefix to 12 and the length to 3, when you want to dial the number 123456, the entered
number is displayed as 12***6 on the phone screen.
Note: It works only if “features.password_dial.enable” is set to 1 (Enabled).
Permitted
Values
Integer from 0 to 32
Default
Blank
Web UI
Features > General Information > PswLength
Call Timeout
Call timeout defines a specific period of time after which the phone will cancel the dialing if the call is not answered.
Topic

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