Yealink SIP-T57W Administrator's Guide

Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series/CP920 IP Phones
528
Values 1-Enabled
Default
0
Parameter
account.X.custom_ua
[1]
<MAC>.cfg
Description
It configures the suffix of User-Agent in SIP request messages from the phone.
Permitted
Values
String within 256 characters
Default
Blank
Parameter
account.X.call_id_mode
[1]
<MAC>.cfg
Description
It configures the constitution of caller ID.
Permitted
Values
0-Use random digits
1–Use the combination of the digits and letters
2–Use random digits plus MAC address
Default
0
Parameter
account.X.path.enable
[1]
<MAC>.cfg
Description
It enables or disables the phone to carry the Supported:path header in the REGISTER request mes-
sage.
Permitted
Values
0-Disabled
1-Enabled
Default
0
Parameter
account.X.insert_outbound_in_route.enable
[1]
<MAC>.cfg
Description
It enables or disables the phone to add outbound server address as the topmost Route header in the
request message.
Note: It works only if the received 200 OK response for the REGISTER request contains the Service
route header.
Permitted
Values
0-Disabled
1-Enabled
Default
0
Parameter
account.X.invite_with_rpid_header.enable
[1]
<MAC>.cfg
Description
It enables or disables the phone to add the Remote-Party-ID (RPID) header in the initial INVITE mes-
sage.
Permitted
Values
0-Disabled
1-Enabled
Default
0
Supported
Devices
All phones except T48G, T46G, T42G, T41P and T29G
Parameter
account.X.third_part_request_with_route.enable
[1]
<MAC>.cfg
Description
It enables or disables the phone to carry the Route header in the request message which is sent to
the third-party server (for example, a Music On Hold server).
Note: It works only if the received 200 OK response for the REGISTER request contains the Service
route header.
Permitted
0-Disabled

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