Yealink SIP-T52S Administrator's Guide

Configuring Audio Features
903
Parameter
Permitted Values
Default
during a call.
Web User Interface:
Features->General Information->Play Local DTMF Tone
Phone User Interface:
None
To configure play local DTMF tone via web user interface:
1. Click on Features->General Information.
2. Select the desired value from the pull-down list of Play Local DTMF Tone.
3. Click Confirm to accept the change.
Voice Quality Monitoring (VQM)
Voice quality monitoring feature allows the IP phones to generate various quality metrics for
listening quality and conversational quality. These metrics can be sent between the phones in
RTCP-XR packets. These metrics can also be sent in SIP PUBLISH messages to a central voice
quality report collector. Two mechanisms for voice quality monitoring are supported by Yealink
IP phones:
 RTCP-XR
 VQ-RTCPXR

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