Yealink SIP-T52S Administrator's Guide

Administrator’s Guide for SIP-T2 Series/T19(P) E2/T4 Series/T5 Series/CP860/CP920 IP Phones
900
Parameters
Permitted Values
Default
features.dtmf.transfer = 123
Note: It works only if the value of the parameter “features.dtmf.replace_tran” is set to 1
(Enabled).
Web User Interface:
Features->General Information->Tran Send DTMF
Phone User Interface:
None
To configure transfer via DTMF via web user interface:
1. Click on Features->General Information.
2. Select the desired value from the pull-down list of DTMF Replace Tran.
3. Enter the specified DTMF digits in the Tran Send DTMF field.
4. Click Confirm to accept the change.
DTMF Send Event Flash
Generally, the IP phones support 16 encoded DTMF signals (0 to 15), represented by the ten
digits, the letters A to D, and the symbols # and *. DTMF send event flash feature allows IP
phones to send Event Flash (DTMF signal 16) by transforming the letter E.
The following table summarizes the DTMF-related named events within the telephone-event
payload format:

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