AppendixAIntroductiontoVideoconferencingSystem
FigureA-3SingleMCUMode
lMulti-MCUMode
Themulti-MCUlayerednetworkingstructureissuitablefortheconferencewithwidely
distributedconferencesites,usingISDN,B-ISDN,InternetorDDNcommunication
channel.FigureA-4explainsthemulti-MCUnetworkingstructure.
FigureA-4Multi-MCUMode
Thislayeredstructurecoversawideareaandsupportsinternationalvideoconference.
Itiseasytoexpandandmanage.EachMCUisnotequalinthisnetworkingstructure
andhasaspecicrole.Thelower-layerMCUiscontrolledandrestrictedbythe
upper-layerMCU.Mostcurrentvideoconferencesystemsworkinthisnetworking
mode.
A-5
SJ-20120814152402-001|2012-08-30(R1.0)ZTEProprietaryandCondential