Yealink SIP-T57W Administrator's Guide

Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series/CP920 IP Phones
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Phone UI
Menu > Features > Anonymous Call > Send Anonymous Code (Send Anony Code)
Parameter
account.X.anonymous_call.server_base_only
[1]
<MAC>.cfg
Description
It enables or disables the phone to perform the anonymous call feature on server-side only.
Note: You need to configure parameters “account.X.anonymous_call_oncode” and “accoun-
t.X.anonymous_call_offcode” to activate and deactivate the server-side anonymous call feature.
Permitted
Values
0-Disabled, the phone will perform the anonymous call feature on server-side and locally. If the
anonymous call feature is enabled on the phone, the phone will carry the Anonymous attribute in the
From header of the INVITE message.
1-Enabled, the phone will perform the anonymous call feature on server-side only. The phone will not
carry the Anonymous attribute in the From header of the INVITE message even if the anonymous call
feature is enabled on the phone.
Default
Blank
Parameter
account.X.anonymous_call_oncode
[1]
<MAC>.cfg
Description
It configures the anonymous call on code.
The phone will send the code to activate the anonymous call feature on server-side when you activate
it on the phone.
Permitted
Values
String within 32 characters
Default
Blank
Web UI
Account > Basic > Send Anonymous Code > On Code
Phone UI
Menu > Features > Anonymous Call > On Code
Parameter
account.X.anonymous_call_offcode
[1]
<MAC>.cfg
Description
It configures the anonymous call off code.
The phone will send the code to deactivate the anonymous call feature on server-side when you deac-
tivate it on the phone.
Permitted
Values
String within 32 characters
Default
Blank
Web UI
Account > Basic > Send Anonymous Code > Off Code
Phone UI
Menu > Features > Anonymous Call > Off Code
[1]
X is the account ID. For T57W/T54W/T48U/T48S/T48G/T46U/T46S/T46G/T29G, X=1-16; for
T53W/T53/T43U/T42G/T42U/T42S, X=1-12; for T41P/T41S/T27G, X=1-6; for T40P/T40G/T23P/T23G, X=1-3; for T21
(P) E2, X=1-2; for T19(P) E2/CP920, X=1.
Call Number Filter
Call number filter feature allows IP phone to filter designated characters automatically when dialing.
Topic
Call Number Filter Configuration
Call Number Filter Configuration
The following table lists the parameter you can use to configure call number filter.

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