Documentations ......................................................................................................................................................................... v

Conventions Used in Yealink Documentations ............................................................................................................. v

In This Guide ............................................................................................................................................................................... vi

Summary of Changes ............................................................................................................................................................. vii

Changes for Release 80, Guide Version 80.132 ................................................................................................. vii

Changes for Release 80, Guide Version 80.131 ................................................................................................ viii

Changes for Release 80, Guide Version 80.130 ................................................................................................ viii

Changes for Release 80, Guide Version 80.95 ..................................................................................................... ix

Changes for Release 80, Guide Version 80.91 ..................................................................................................... ix

Changes for Release 80, Guide Version 80.90 ..................................................................................................... ix

Changes for Release 80, Guide Version 80.82 ...................................................................................................... x

Changes for Release 80, Guide Version 80.81 ...................................................................................................... x

Changes for Release 80, Guide Version 80.80 ..................................................................................................... xi

Changes for Release 80, Guide Version 80.60 .................................................................................................... xii

Changes for Release 80, Guide Version 80.21 .................................................................................................... xii

Changes for Release 80, Guide Version 80.20 ................................................................................................... xiv

Changes for Release 80, Guide Version 80.6 ..................................................................................................... xiv

Table of Contents ....................................................................... xvii

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 .......................................................................................................................................... 15

Expansion Module .................................................................................................................................................................. 17

Getting Started ............................................................................. 19

Connecting the IP Phones ................................................................................................................................................... 19

Attaching the Stand and the Optional Wall Mount Bracket (not Applicable to CP860 IP Phones)

............................................................................................................................................................................................... 20

Inserting the Camera (Only Applicable to SIP VP-T49G IP Phones) ......................................................... 28

Connecting the Handset and Optional Headset (not Applicable to CP860 IP Phones) ................... 28

Connecting the Power and Network ..................................................................................................................... 30

Table of Contents

xvii