开放系统互联（OSI）发展史，打压华为者最可耻！

    当今，美国政客打压华为是搞错了对象。华为是干什么的？简单地说，华为是世界互联网的修理匠，完全                             遵循国际互联网标准OZI。

    实质上，打压华为就是跟国际标准OSI过不去，必定自找烦恼。

   记得，上世纪8-90年代，袁萌最喜爱去的地方就是中关村大姐上的电脑书籍商店，去“淘书”，其中开放系统互联（OSI）书籍为“最爱”。

    美国政客打压华为是技术“白痴”，根本不懂OSI。

华为是老实人，遵循OSI国际标准做生意，符合互联网的开放性本质。           打压华为者最可耻！

本文附件说明OSI的来历。

袁萌  陈启清  5月30日

附件：

History[edit]

In the late 1970s, the International Organization for Standardization (ISO) conducted a program to develop general standards and methods of networking. A similar process evolved at the International Telegraph and Telephone Consultative Committee (CCITT, from French: Comité Consultatif International Téléphonique et Télégraphique). Both bodies developed documents that defined similar networking models.

In 1983, these two documents were merged to form a standard called The Basic Reference Model for Open Systems Interconnection. The standard is usually referred to as Open Systems Interconnection Reference Model, OSI Reference Model, or simply OSI model. It was published in 1984 by both the ISO, as standard ISO 7498, and the renamed CCITT (now called the Telecommunications Standardization Sector of the International Telecommunication Union or ITU-T) as standard X.200.

OSI had two major components, an abstract model of networking, called the Basic Reference Model or seven-layer model, and a set of specific protocols.

The concept of a seven-layer model was provided by the work of Charles Bachman at Honeywell Information Services. Various aspects of OSI design evolved from experiences with the ARPANET, NPLNET, EIN, CYCLADES network and the work in IFIP WG6.1. The new design was documented in ISO 7498 and its various addenda. In this model, a networking system was divided into layers. Within each layer, one or more entities implement its functionality. Each entity interacted directly only with the layer immediately beneath it, and provided facilities for use by the layer above it.

Protocols enable an entity in one host to interact with a corresponding entity at the same layer in another host. Service definitions abstractly describe the functionality provided to an (N)-layer by an (N-1) layer, where N was one of the seven layers of protocols operating in the local host.

The OSI standards documents are available from the ITU-T as the X.200-series of recommendations.[1] Some of the protocol specifications were also available as part of the ITU-T X series. The equivalent ISO and ISO/IEC standards for the OSI model were available from ISO. Not all are free of charge.[2]