Yealink CP860 - Advanced Phone Features; Recording Using a USB Flash Drive; Intercom; Multicast Paging

Table of Contents
xi
What do “on code” and “off code” mean? ....................................................................... 347
How to solve the IP conflict problem? ................................................................................ 347
How to reset your phone to factory configurations? ......................................................... 347
How to restore the administrator password? .................................................................... 348
Appendix ...............................................................................349
Appendix A: Glossary ................................................................................................................. 349
Appendix B: Time Zones ............................................................................................................. 351
Appendix C: Configuring Programable Key ............................................................................. 353
Appendix D: SIP (Session Initiation Protocol) ............................................................................ 356
RFC and Internet Draft Support .......................................................................................... 357
SIP Request ............................................................................................................................ 359
SIP Header ............................................................................................................................ 360
SIP Responses ....................................................................................................................... 361
SIP Session Description Protocol (SDP) Usage .................................................................. 364
Appendix E: SIP Call Flows ......................................................................................................... 364
Successful Call Setup and Disconnect ............................................................................... 365
Unsuccessful Call Setup—Called User is Busy .................................................................. 367
Unsuccessful Call Setup—Called User Does Not Answer ................................................ 370
Successful Call Setup and Call Hold .................................................................................. 372
Successful Call Setup and Call Waiting ............................................................................. 374
Call Transfer without Consultation ...................................................................................... 379
Call Transfer with Consultation ............................................................................................ 383
Always Call Forward ............................................................................................................ 388
Busy Call Forward ................................................................................................................ 392
No Answer Call Forward ..................................................................................................... 395
Call Conference .................................................................................................................... 398
Index ......................................................................................403