Yealink SIP-T48G Administrator's Guide

Administrator’s Guide for SIP-T2 Series/T19(P) E2/T4 Series/CP860 IP Phones
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The web user interface prompts the message “Are you sure delete user-defined
factory configuration?”.
3. Click OK to delete the custom factory configuration files.
The imported custom factory file will be deleted. The IP phone will be reset to
default factory configurations after resetting.
IP phones support remote reboot by a SIP NOTIFY message with “Event: check-sync”
header. Whether the IP phone reboots or not depends on the value of the parameter
“sip.notify_reboot_enable”. If the value is set to 1, or the value is set to 0 and the header
of the SIP NOTIFY message contains an additional string “reboot=true”, the IP phone
will reboot immediately.
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

Yealink SIP-T48G Specifications

General

Expansion module support	Yes
Handset type	Wired handset
Product type	IP Phone
Product color	Black
Volume control	-
Display diagonal	7 \
Display resolution	800 x 480 pixels
Lines quantity	- lines
Phonebook capacity	1000 entries
Number of VoIP accounts	6
AC adapter input voltage	100 - 240 V
Number of handles included	1 pc(s)

Weight and Dimensions

Width	266 mm
Height	185 mm