Yealink SIP-T57W Administrator's Guide

Troubleshooting Methods
552
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
Topic
Notify Reboot Configuration
Notify Reboot Configuration
The following table lists the parameter you can use to configure notify reboot.
Parameter
sip.notify_reboot_enable <y0000000000xx>.cfg
Description
It configures the IP phone behavior when receiving a SIP NOTIFY message which contains the
header “Event: check-sync”.
Permitted
Values
0-The phone will reboot only if the SIP NOTIFY message contains an additional string “reboot=true”.
1-The phone will reboot.
2-The phone will ignore the SIP NOTIFY message.
Default
1
Rebooting the Device via the Phone User Interface
You can reboot your device via the phone user interface.
Procedure
1. Press Menu > Basic > Reboot (Menu > Settings > Basic Settings > Reboot).
2. Press OK.
The device begins rebooting. Any reboot of the device may take a few minutes.
Rebooting the Device via Web User Interface
You can reboot your IP phone via the web user interface.
Procedure
1. Click Settings > Upgrade.
2. Click Reboot.
The device begins rebooting. Any reboot of the device may take a few minutes.

Yealink SIP-T57W Specifications

General

Mounting	Desk/Wall
Handset type	Wired handset
Product type	IP Phone
Product color	Gray
Ethernet LAN	Yes
Wi-Fi standards	802.11a, 802.11b, 802.11g, Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac)
Security algorithms	AES, HTTPS, MD5, SRTP
Networking standards	IEEE 802.11a, IEEE 802.11ac, IEEE 802.11b, IEEE 802.11g, IEEE 802.11n, IEEE 802.1p, IEEE 802.1x, IEEE 802.3af
Ethernet LAN interface type	Gigabit Ethernet
Supported network protocols	FTP/TFTP/HTTP/HTTPS
Dual-Tone Multi-Frequency (DTMF) modes	In-band, Out-of band, SIP info
USB 2.0 ports quantity	1
Ethernet LAN (RJ-45) ports	2
Lines quantity	- lines
Phonebook capacity	1000 entries
Number of VoIP accounts	16
AC adapter input voltage	100 - 240 V
AC adapter output current	2 A
AC adapter output voltage	5 V
Volume control	Buttons
Operating temperature (T-T)	0 - 40 °C
Operating relative humidity (H-H)	10 - 95 %
Display diagonal	7 \
Display resolution	800 x 480 pixels
Front camera	No
Cables included	LAN (RJ-45)
Number of handles included	1 pc(s)
Voice codecs	G.722, G.723.1, G.726, G.729A, G.729B, iLBC

Weight and Dimensions

Depth	220 mm
Width	259.4 mm
Height	211 mm