Yealink SIP-T52S Administrator's Guide

Troubleshooting
999
The NOTIFY message is formed as shown:
NOTIFY sip:<user>@<dsthost> SIP/2.0
To: sip:<user>@<dsthost>
From: sip:sipsak@<srchost>
CSeq: 10 NOTIFY
Call-ID: 1234@<srchost>
Event: check-sync;reboot=true
Procedure
Changes can only be configured using the configuration files.
Central Provisioning
(Configuration File)
<y0000000000xx>.cfg
Configure the IP phone behavior
when receiving a SIP NOTIFY
message which contains the
header “Event: check-sync”.
Parameter:
sip.notify_reboot_enable
Details of the Configuration Parameter:
Parameter
Permitted Values
Default
sip.notify_reboot_enable
0, 1 or 2
1
Description:
Configure the IP phone behavior when receiving a SIP NOTIFY message which contains the
header “Event: check-sync”.
0-The IP phone will reboot only if the SIP NOTIFY message contains an additional string
“reboot=true”.
1-The IP phone will be forced to reboot.
2-The IP phone will ignore the SIP NOTIFY message.
Web User Interface:
None
Phone User Interface:
None
How to reboot the IP phone via web/phone user interface?
You can reboot your IP phone via web/phone 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