Yealink SIP-T52S Administrator's Guide

Administrator’s Guide for SIP-T2 Series/T19(P) E2/T4 Series/T5 Series/CP860/CP920 IP Phones
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lls_per_linekey
Details of Configuration Parameter:
Parameter
Permitted
Values
Default
phone_setting.call_appearance.calls_per_linekey
Integer from
0 to 24
0
Description:
Configures the maximum number of concurrent calls per line key for the IP phone. It applies
to all registered lines.
If it is set to 0, there is no limit for the number of concurrent calls.
Example:
phone_setting.call_appearance.calls_per_linekey = 2
It means that you can have up to two concurrent calls per line key on the IP phone.
Note: The value configured by the parameter
“account.X.phone_setting.call_appearance.calls_per_linekey” takes precedence over that
configured by this parameter. It is not applicable to SIP-T19(P) E2/CP860/CP920 IP phones.
Web User Interface:
None
Phone User Interface:
None
Per-Line Parameter:
“account.X.phone_setting.call_appearance.calls_per_linekey” is the per-line parameter of the
global parameter “phone_setting.call_appearance.calls_per_linekey”, and it takes precedence
over the global parameter.
X stands for the serial number of the account.
X ranges from 1 to 16 (for SIP-T54S/T48G/T48S/T46G/T46S/T29G)
X ranges from 1 to 12 (for SIP-T52S/T42G/T42S)
X ranges from 1 to 6 (for SIP-T41P/T41S/T27P/T27G)
X ranges from 1 to 3 (for SIP-T40P/T40G/T23P/T23G)
X ranges from 1 to 2 (for SIP-T21(P) E2)
Call Display
Display contact photo allows the IP phone to present the contact avatar when it receives an
incoming call, dials an outgoing call or engages in a call. To use this feature, make sure that you
have uploaded the avatar for the contact in advance. For more information, refer to

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