Most of researches on universal Call Control Model supporting Multi-Party Multimedia still focus on two-party-call connection establishment, while leaving how to connect multi-party in one call and how to open up the control capabilities to services/applications unsettled. In this paper, based on the analysis on capability requirements for multi-party multimedia and mobile services, a new universal call state and service switch model is advanced, named as "Session Control View Model (SCVM)", which emphasizes to provide four layered View capabilities, thus constructing the infrastructure of multiparty multimedia service system, such as SIP-AS, Parlay/OSA-GW or MSC base on Softswitch technology.