Yealink SIP-T52S Administrator's Guide

Setting Up Your System
137
overwrite_mode = 1
Learn the following:
 The line beginning with “#” is considered to be a comment.
 The file header “#!version:1.0.0.1” is not a comment and must be placed in the first line. It
cannot be edited or deleted.
 Each “include” statement can reference a configuration file. The referenced configuration
file format must be *.cfg.
 The contents in the angle brackets or double quotation marks represent the download
paths of the referenced configuration files (e.g., http://10.2.5.206/configure/account.cfg).
The download path must point to a specific CFG file. The sip.cfg and account.cfg are the
specified configuration files to be downloaded during auto provisioning.
 The CFG files are downloaded in the order listed (top to bottom).
The IP phone downloads the boot file first, and then downloads the sip.cfg and account.cfg
configuration files from the “configure” directory on the provisioning server in sequence. The
parameters in the new downloaded configuration files will override the duplicate parameters in
files downloaded earlier.
 “overwrite_mode = 1” means overwrite mode is enabled. The overwrite mode will be
applied to the configuration files specified to download. If the value of a parameter in
configuration files is left blank or a parameter in configuration files is deleted or
commented out, the factory default value can take effect immediately after auto
provisioning.
Note
For more information on how to customize boot file, refer to Yealink SIP IP Phones Auto
Provisioning Guide_V81 .
Common Boot File
Common boot file, named y000000000000.boot, is effectual for all phones.
MAC-Oriented Boot File
MAC-Oriented boot file, named <MAC>.boot. It will only be effectual for a specific IP phone.
The MAC-Oriented boot file should be created using template boot file in advance.
The MAC-Oriented boot file is named after the MAC address of the IP phone. MAC address, a
unique 12-digit serial number assigned to each phone, can be obtained from the bar code on
the back of the IP phone. For example, if the MAC address of an IP phone is 00156574B150, the
name of the MAC-Oriented boot file is 00156574b150.boot (case-sensitive).
Overwrite mode only affects the non-static settings configured using configuration files.
If you do not use the boot file for auto provisioning, overwrite mode is disabled by default and
you are not allowed to enable it.

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