Yealink SIP-T52S Administrator's Guide

Configuring Security Features
931
All Keys
Function Keys
Menu key
Pre-
dialing/Di
aling
screen
Allow Behavior: You are allowed to press
the Line Key (key type is Line), input or
modify numbers, dial emergency
numbers and return to idle screen.
Keys not Locked: IME, More, Cancel,
Send, Delete and Line soft key; line key
(key type is Line), X, OK/√, Volume key,
Speakerphone key, digit keys, HEADSET
key, “*”/”#” (key as send), off-hook key
and on-hook key.
Note: Line key is not applicable to SIP-
T19(P) E2/CP860/CP920 IP phones. X,
HEADSET and Speakerphone key are not
applicable to CP860/CP920 IP phones.
Off-hook key and on-hook key are only
applicable to CP860/CP920 IP phones.
The same as All
Keys, but you
can dial any
number.
The Menu
key (key type
is Menu) is
locked.
Talking
Allow Behavior: You are allowed to end
the call, initiate a new call to dial the
emergency number and resume a call.
Keys not Locked: EndCall, Cancel,
Resume, NewCall soft key; line key (key
type is Line), digit keys, X, Volume key,
HEADSET key, Speakerphone key, off-
hook key and on-hook key.
Note: Pressing X key to end the call are
not applicable to SIP-T23P/T23G/T21(P)
E2/T19(P) E2 and CP860/CP920 IP
phones. Line key is not applicable to SIP-
T19(P) E2 and CP860/CP920 IP phones.
HEADSET and Speakerphone key is not
applicable to CP860/CP920 IP phones.
Off-hook key and on-hook key are only
applicable to CP860/CP920 IP phones.
The same as All
Keys, but you
can dial any
number.
The Menu
key (key type
is Menu) is
locked.
Phone Lock Key
For more information on how to configure the DSS Key, refer to Appendix D: Configuring DSS
Key on page 1014.

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