本文件给出了GSM公共陆地移动网络（PLMN）的一般描述。它包含网络中组成元素的定义和概述，以及它们的功能和相关的性能目标。还描述了网络可以向其用户提供的服务和设施，以及信令程序、操作和维护的一般路线。由于本文件包含了散布在所有GSM规范中的信息，因此本文件可作为指南。本文件中使用的术语GSM MoU和PCN MoU（或有时仅指MoU）指的是实施GSM的运营商组织，其中提及了运营商的一些责任- 属于文件。

The present document gives a general description of a GSM Public Land Mobile Network (PLMN). It contains a definition and a summarised description of the elements comprised in the network, and their functions and the associated performance objectives. The services and facilities that the network can offer to its users, are also described as well as the general lines of signalling procedures, operation and maintenance. Since the present document includes information spread throughout all GSM specifications this document can serve as guide. The terms GSM MoU and PCN MoU (or sometimes MoU only) used in this document refers to Operators organisations implementing GSM and to which some responsibility of referred-to documents belong.