Yealink SIP-T52S Administrator's Guide

Configuring Audio Features
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4. Enter the desired value in the Handfree Send Volume (-50~50) field.
5. Click Confirm to accept the change.
A dialog box pops up to prompt that the settings will take effect after a reboot.
6. Click OK to reboot the phone.
Ringer Volume
You can configure the ringer volume forcedly, so the user cannot adjust the ringer volume on
the phone. This feature is used to avoid missing calls when the user turns down the ringer
volume. It is not applicable to SIP-T54S/T52S/CP860 IP phones.
Procedure
Ringer volume can be configured using the following method.
Central Provisioning
(Configuration File)
<y0000000000xx>.cfg
Configure the ringer volume forcedly.
Parameter:
force.voice.ring_vol
Details of the Configuration Parameter:
Parameters
Permitted Values
Default
force.voice.ring_vol
Integer from 0 to 15
Blank
Description:
Configures the ringer volume forcedly..
If it is set from 0 to 15, the user cannot adjust the ringer volume on the phone. The user
can press the Silence soft key to mute the ringer when receiving an incoming call.
If it is left blank, the user can adjust the ringer volume on the phone.
Note: It is not applicable to SIP-T54S/T52S/CP860 IP phones.
Web User Interface:

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