C3I and the upper layers of the OSI
A broad range of civilian OSI application standards is emerging which are potential candidates for use in military C3I systems. The long term benefits of being able to use civilian standards in military C3I systems are such as to make it sensible to continue the process. This chapter develops some of themes in the context of the upper-layer standards. It also discusses the structure of the standards making up these layers of the architecture and their relevance to military C3I systems.
Based on the study of SIP,the paper presents the overlay method to implement the mapping between SIP protocol state machine and IN call state model BCSM,and analyses the implementation concretely.The method has resolved the key technology in interworking of Internet and IN.