Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. A Collaborative Service Network (CSN) is a Layer-7 switching network that supports complex human / computer relationship webs in a service oriented fashion. There are two types of CSN: Edge-Controlled and Edge-Protected. The former conforms to the classic Internet "dumb network" model and the latter conforms to the classic "intelligent network" model. The detailed specifications for CSNs will be evolved in a public forum through. CollaborativeServiceNetworks.org over the 2007-2009 period under the direction of the Smart Internet Cooperative Research Centre. Open Systems Interconnection (OSI) is an effort to standardize networking that was started in 1977 by the International Organization for Standardization (ISO), along with the ITU-T.Prior to OSI, networking was largely either government-sponsored (ARPANET, CYCLADES) or vendor-developed and proprietary, the latter effort consisting of protocol standards such as SNA, Appletalk, NetWare and DECnet.

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