Yealink SIP-T57W Administrator's Guide

Audio Features
186
the central report collector. When the MOS-LQ value computed by the phone is greater than 2.8, the
phone will not send a critical alert quality report to the central report collector.
If it is set to blank, critical alerts are not generated due to MOS-LQ.
Permitted
Values
Integer from 15 to 40
Default
Blank
Web UI
Settings > Voice Monitoring > Critical Threshold for Moslq
Parameter
phone_setting.vq_rtcpxr_delay_threshold_warn-
ing
<y0000000000xx>.cfg
Description
It configures the threshold value of one-way delay (in milliseconds) that causes the phone to send a
warning alert quality report to the central report collector.
For example, if it is set to 500, when the value of one way delay computed by the phone is greater
than or equal to 500, the phone will send a warning alert quality report to the central report collector;
when the value of one way delay computed by the phone is less than 500, the phone will not send a
warning alert quality report to the central report collector.
If it is set to blank, warning alerts are not generated due to one-way delay. The one-way delay
includes both network delay and end system delay.
Permitted
Values
10 to 2000
Default
Blank
Web UI
Settings > Voice Monitoring > Warning Threshold for Delay
Parameter
phone_setting.vq_rtcpxr_delay_threshold_critical <y0000000000xx>.cfg
Description
It configures the threshold value of one-way delay (in milliseconds) that causes the phone to send a
critical alert quality report to the central report collector.
For example, if it is set to 500, when the value of one-way delay computed by the phone is greater
than or equal to 500, the phone will send a critical alert quality report to the central report collector;
when the value of one way delay computed by the phone is less than 500, the phone will not send a
critical alert quality report to the central report collector.
If it is set to blank, critical alerts are not generated due to one-way delay. The one-way delay includes
both network delay and end system delay.
Permitted
Values
10 to 2000
Default
Blank
Web UI
Settings > Voice Monitoring > Critical Threshold for Delay
VQ-RTCPXR Display
You can check the voice quality data of the last call via the web user interface or phone user interface. You can also
specify the options of the RTP status to be displayed on the phone user interface. Options of the RTP status dis-
played on the web user interface cannot be specified.
Note: You can configure the softkey layout feature to display the RTP Status soft key during the conference. Then you can
press the RTP Status soft key to check the voice quality data with different parties. For more information, refer to Softkey
Layout.
Topic
VQ-RTCPXR Display Configuration

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