Yealink SIP-T52S Administrator's Guide

Configuring Basic Features
159
Configuration Parameters
The following table lists the configuration parameters used to determine the phone behavior
for keeping user personalized settings:
Parameters
Permitted Values
Default
static.auto_provision.custom.protect
0 or 1
0
Description:
Enables or disables the IP phone to keep user personalized settings after auto provisioning.
0-Disabled
1-Enabled
If it is set to 1 (Enabled), <MAC>-local.cfg file generates and personalized non-static
settings configured via web or phone user interface will be kept after auto provisioning.
Note: The provisioning priority mechanism (phone/web user interface >central
provisioning >factory defaults) takes effect only if the value of this parameter is set to 1
(Enabled). If the value of the parameter “overwrite_mode” is set to 1 in the boot file, the
value of this parameter will be forced to set to 1 (Enabled).
Web User Interface:
None
Phone User Interface:
None
static.auto_provision.custom.sync
0 or 1
0
Description:
Enables or disables the IP phone to upload the <MAC>-local.cfg file to the server each time
the file updates, and download the <MAC>-local.cfg file from the server during auto
provisioning.
0-Disabled
1-Enabled
If it is set to 1 (Enabled), the IP phone will upload the <MAC>-local.cfg file to the
provisioning server or a specific server each time the file updates to back up this file. During
auto provisioning, the IP phone will download the <MAC>-local.cfg file from the
provisioning server or a specific server to override the one stored on the phone.
Note: It works only if the value of the parameter “static.auto_provision.custom.protect” is
set to 1 (Enabled). The upload/download path is configured by the parameter
“static.auto_provision.custom.sync.path”.
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