Yealink SIP-T52S Administrator's Guide

Configuring Audio Features
901
Event
encoding (decimal)
0-9
0-9
*
10
#
11
A-D
12-15
Flash
16
The following figure shows the Flash event sent by the IP phone when transmitting DTMF digit
using the RFC 2833 DTMF type:
Procedure
Configuration changes can be performed using the configuration files.
Central Provisioning
(Configuration File)
<y0000000000xx>.cfg
Configure DTMF send event flash
feature.
Parameter:
features.dtmf.dtmf_flash
Details of Configuration Parameter:
Parameter
Permitted Values
Default
features.dtmf.dtmf_flash
0 or 1
0
Description:
Enables or disables the IP phone to send Event Flash by transforming the letter E.
0-Disabled

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