Yealink SIP-T21 - Manual (Page 7)

Table of Contents
vii
About This Guide ...................................................................... v
In This Guide ......................................................................................................................... v
Summary of Changes .......................................................................................................... v
Changes for Release 72, Guide Version 72.1 ................................................................ v
Changes for Release 71, Guide Version 71.91 ............................................................. vi
Changes for Release 71, Guide Version 71.90 ............................................................. vi
Table of Contents ..................................................................... vii
Overview .................................................................................. 1
Hardware Component Instructions .................................................................................... 1
Icon Instructions .................................................................................................................... 3
LED Instructions ..................................................................................................................... 4
User Interfaces ..................................................................................................................... 5
Phone User Interface ........................................................................................................ 5
Web User Interface ........................................................................................................... 5
Documentations ................................................................................................................... 8
Getting Started ......................................................................... 9
Packaging Contents ............................................................................................................. 9
Phone Installation ............................................................................................................... 11
Phone Initialization ............................................................................................................. 13
Phone Status ....................................................................................................................... 13
Basic Network Settings ...................................................................................................... 14
Registration ......................................................................................................................... 16
Idle Screen .......................................................................................................................... 16
Customizing Your Phone ......................................................... 17
General Settings ................................................................................................................ 17
Contrast ............................................................................................................................ 17
Language ......................................................................................................................... 18
Time & Date ..................................................................................................................... 19
Administrator Password ................................................................................................. 20
Key as Send ..................................................................................................................... 21
Keypad Lock .................................................................................................................... 21
Audio Settings .................................................................................................................... 24