Yealink SIP-T52S Administrator's Guide

Configuring Audio Features
905
2. Select the desired value from the pull-down list of Voice RTCP-XR Report.
3. Click Confirm to accept the change.
A dialog box pops up to prompt that the settings will take effect after a reboot.
4. Click OK to reboot the phone.
VQ-RTCPXR
The VQ-RTCPXR mechanism, compliant with RFC 6035, sends the service quality metric reports
contained in SIP PUBLISH messages to the central report collector. Three types of quality
reports can be enabled:
 Session: Generated at the end of a call.
 Interval: Generated during a call at a configurable period.
 Alert: Generated when the call quality degrades below a configurable threshold.
A wide range of performance metrics are generated in the following three ways:
 Based on current values, such as jitter, jitter buffer max and round trip delay.
 Covers the time period from the beginning of the call until the report is sent, such as
network packet loss.
 Computed using other metrics as input, such as listening Mean Opinion Score (MOS-LQ)
and conversational Mean Opinion Score (MOS-CQ).
To operate with central report collector, IP phones must be configured to forward their voice
quality reports to the specified report collector. You can specify the report collector on a per-
line basis.
Users can check the voice quality data of the last call via web user interface or phone user
interface. Users can also specify the options of the RTP status to be displayed on the phone
user interface. Options of the RTP status to be displayed on the web user interface cannot be
specified.
Procedure

Yealink SIP-T52S Specifications

General

Touchscreen	-
Display diagonal	2.8 \
Backlight display	Yes
Display resolution	320 x 240 pixels
Lines quantity	16 lines
Phonebook capacity	1000 entries
Number of VoIP accounts	12
AC adapter input voltage	100 - 240 V
Bluetooth version	2.1+EDR
Security algorithms	802.1x RADIUS, HTTPS, MD5
Ethernet LAN interface type	Gigabit Ethernet
USB 2.0 ports quantity	1
Ethernet LAN (RJ-45) ports	2
Mounting	Desk/Wall
Handset type	Wired handset
Product type	IP Phone
Product color	Black
Voice codecs	G.722, G.723, G.723.1, G.726, OPUS, iLBC
Volume control	Digital
Operating temperature (T-T)	-10 - 40 °C
Operating relative humidity (H-H)	10 - 95 %
Cables included	LAN (RJ-45)
Number of handles included	1 pc(s)
Front camera	No
Operating system installed	Linux

Weight and Dimensions

Depth	212 mm
Width	211.6 mm
Height	166.8 mm