Yealink SIP-T57W Administrator's Guide

Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series/CP920 IP Phones
369
Description
It configures the type of location request message.
Note: It works only if “dialplan.emergency.enable” is set to 1 (Enabled) and “dial-
plan.emergency.asserted_id_source” is set to HELD.
Permitted
Values
SIMPLE or REDSKY
If it is set to SIMPLE, the phone will send the location request message defined in RFC5985.
If it is set to REDSKY, the phone will send the location request message defined by REDSKY.
Default
SIMPLE
Parameter
dialplan.emergency.held.request_element.X.name
[2]
<y0000000000xx>.cfg
Description
It configures the custom element name to be sent in a location request message.
Example:
dialplan.emergency.held.request_element.1.name = mac
dialplan.emergency.held.request_element.2.name = companyID
dialplan.emergency.held.request_element.3.name = nai
Note: It works only if “dialplan.emergency.enable” is set to 1 (Enabled) and “dial-
plan.emergency.asserted_id_source” is set to HELD.
Permitted
Values
String
Default
Blank
Parameter
dialplan.emergency.held.request_element.X.value
[2]
<y0000000000xx>.cfg
Description
It configures the custom element value to be sent in a location request message.
Example:
dialplan.emergency.held.request_element.1.value = 001565B38ECB
dialplan.emergency.held.request_element.2.value = 6f2f2d50-c385-4b72-b84a-ce0ca3a77cb7
dialplan.emergency.held.request_element.3.value = 8611@pbx.yealink.com
Note: It works only if “dialplan.emergency.enable” is set to 1 (Enabled) and “dial-
plan.emergency.asserted_id_source” is set to HELD.
Permitted
Values
String
Default
Blank
Parameter
account.X.reg_with_pani_header.enable
[3]
<MAC>.cfg
Description
It enables or disables the phone to carry the PANI header in the REGISTER request message.
Permitted
Values
0-Disabled
1-Enabled
Default
0
Parameter
account.X.invite_with_pani_header.enable
[3]
<MAC>.cfg
Description
It enables or disables the phone to carry the PANI header in the INVITE request message.
The PANI header format is:
P-Access-Network-Info:IEEE-802.3; eth-location=<MAC Address Of The Phone > ; local-time-zone-
e=”0800”

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