Yealink SIP-T48G Administrator's Guide

Table of Contents
xiii
About This Guide ...................................................................... v
Documentations ............................................................................................................................... v
Conventions Used in Yealink Documentations ............................................................................. v
In This Guide ................................................................................................................................... vi
Summary of Changes ................................................................................................................... vii
Changes for Release 80, Guide Version 80.80 ..................................................................... vii
Changes for Release 80, Guide Version 80.60 .................................................................... viii
Changes for Release 80, Guide Version 80.21 .................................................................... viii
Changes for Release 80, Guide Version 80.20 ....................................................................... x
Changes for Release 80, Guide Version 80.6 ......................................................................... x
Table of Contents ................................................................... xiii
Product Overview ..................................................................... 1
VoIP Principle .................................................................................................................................... 1
SIP Components............................................................................................................................... 2
SIP IP Phone Models ........................................................................................................................ 3
Physical Features of IP Phones ................................................................................................ 4
Key Features of IP Phones ...................................................................................................... 14
Expansion Module ......................................................................................................................... 16
Getting Started ....................................................................... 19
Connecting the IP Phones ............................................................................................................. 19
Initialization Process Overview .................................................................................................... 32
Verifying Startup ............................................................................................................................ 33
Reading Icons ................................................................................................................................ 35
Configuration Methods ................................................................................................................. 44
Phone User Interface.............................................................................................................. 44
Web User Interface ................................................................................................................ 44
Configuration Files.................................................................................................................. 44
Obtaining Configuration Files and Resource Files ..................................................................... 48
Keep User Personalized Settings ................................................................................................. 51
Configuration Parameters...................................................................................................... 51
Scenario A Keep user personalized configuration settings ............................................... 53
Scenario B Clear user personalized configuration settings ............................................... 57
Scenario C Keep user personalized settings after factory reset ....................................... 58

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