b)Network terminal (aka Server):It implements the 国家重片 following functions: information capturing and/or storage voice recorder,video camera,data store server (mixed)processing and transmission of users'information video conferencing server control and management for itself and users corresponding example are Web server and Session Initiation Protocol(SP#,会话(W会晤)发起/启动协议)call processing server. Cisco IP/VC 3510 SIP Videoconferencing Web Server Multipoint Control Unit SIP Server (MPCU#)b) Network terminal (aka Server): It implements the following functions:  information capturing and/or storage voice recorder, video camera, data store server  (mixed) processing and transmission of users’ information video conferencing server Web Server Cisco IP/VC 3510 Videoconferencing Multipoint Control Unit (MPCU#) SIP Server  control and management for itself and users corresponding example are Web server and Session Initiation Protocol (SIP#, 会话(/会晤)发起/启动协议) call processing server