Table of ContentsxiTable of ContentsAbout This Guide ...................................................................... vDocumentations ................................................................................................................................. vFirmware ............................................................................................................................................ vIn This Guide ..................................................................................................................................... viSummary of Changes ........................................................................................................................ viChanges for Release 22, Guide Version 22.15 ............................................................................ viChanges for Release 22, Guide Version 22.5 ............................................................................. viiChanges for Release 21, Guide Version 21.20 ........................................................................... viiChanges for Release 21, Guide Version 21.15 ........................................................................... viiChanges for Release 20, Guide Version 20.6 ............................................................................ viiiTable of Contents ..................................................................... xiSystem Overview ....................................................................... 1VoIP Principles ................................................................................................................................... 1Physical Features ................................................................................................................................ 2Packaging Contents ........................................................................................................................... 3VC400 Packaging Contents ......................................................................................................... 3VC120 Packaging Contents ......................................................................................................... 6System Component Instructions ...................................................................................................... 10VC400/VC120 Codec ................................................................................................................. 10VCC18/VCC20 HD Camera ........................................................................................................ 12Video Conferencing Phone ....................................................................................................... 14CPE80 Expansion Microphone ................................................................................................... 19VCM30 Video Conferencing Microphone Array ........................................................................ 20VCR10 Remote Control ............................................................................................................. 23Icon Instructions ............................................................................................................................... 25Icons on Display Device ............................................................................................................ 25Icons on the Video Conferencing Phone ................................................................................... 27LED Instructions ............................................................................................................................... 29User Interfaces ................................................................................................................................. 30Web User Interface ................................................................................................................... 30Remote Control......................................................................................................................... 31Getting Started........................................................................ 33System Installation ........................................................................................................................... 33