Yealink SIP-T4X Administration Manual

Also see for Yealink SIP-T42G: Developer's guide Administrator's guide Manual Auto provisioning guide Getting started

Contents

Yealink SIP-T4X Administration Manual Manual pdf 14 page image

Table of ContentsxiiiHow to reboot IP phone remotely? ..................................................................................... 238How to increase or decrease the volume? ........................................................................ 238What will happen if I connect both PoE cable and power adapter? Which has the higherpriority? .................................................................................................................................. 239What is auto provisioning? .................................................................................................. 239What is PnP? .......................................................................................................................... 239Why doesn’t the IP phone update the configuration? ...................................................... 239What do “on code” and “off code” mean? ....................................................................... 239How to solve the IP conflict problem? ................................................................................ 240How to reset your phone to factory configurations? ......................................................... 240How to restore the administrator password? .................................................................... 241Appendix ...............................................................................243Appendix A: Glossary ................................................................................................................. 243Appendix B: Time Zones ............................................................................................................. 245Appendix C: Configuration Parameters .................................................................................... 248Setting Parameters in Configuration Files .......................................................................... 248Basic and Advanced Feature Parameters ......................................................................... 248Audio Feature Parameters................................................................................................... 359Upgrading Firmware ........................................................................................................... 371Resource Files ....................................................................................................................... 374Troubleshooting .................................................................................................................... 379Configuring DSS Key ............................................................................................................ 381Appendix D: SIP (Session Initiation Protocol) ............................................................................ 396RFC and Internet Draft Support .......................................................................................... 396SIP Request ............................................................................................................................ 399SIP Header ............................................................................................................................ 400SIP Responses ....................................................................................................................... 401SIP Session Description Protocol (SDP) Usage .................................................................. 403Appendix E: SIP Call Flows ......................................................................................................... 404Successful Call Setup and Disconnect ............................................................................... 405Unsuccessful Call Setup—Called User is Busy .................................................................. 407Unsuccessful Call Setup—Called User Does Not Answer ................................................ 410Successful Call Setup and Call Hold .................................................................................. 412Successful Call Setup and Call Waiting ............................................................................. 414Call Transfer without Consultation ...................................................................................... 419Call Transfer with Consultation ............................................................................................ 423Always Call Forward ............................................................................................................ 428Busy Call Forward ................................................................................................................ 432No Answer Call Forward ..................................................................................................... 435Call Conference .................................................................................................................... 438Appendix F: Sample Configuration File .................................................................................... 443Index ......................................................................................449