本协调标准规定了TETRA终端设备提供的技术特性，该终端设备能够连接到公共电信网络（PTN），并使用TETRA技术。本协调标准的目的是确保PTN不受干扰，并确保btw.PTN和TETRA终端以及btw.TETRA终端到TETRA终端的互通，以便通过适用的网络成功路由通信。本协调标准中的要求与相应PTN的附件要求以及任何其他适用协调标准的要求一起适用。 它不会增加或减少附件要求，除非对TETRA独有的网络有特殊影响。注:适当的PTN指基本速率ISDN的协调标准、基本速率ISDN的协调标准或PSTN的国家法规（实施ETS 300 001）。TETRA终端设备由几个元件组成。本协调标准的结构允许将单个元素作为单独的项目进行测试和批准。由于需要有效使用无线电频谱，应测试基本的空中接口特性。对于每个基本要求，给出了一个测试，包括测量方法。 要求适用于设备的公共网络接口和RF-Air接口，如有必要，可通过附加设备刺激其进行测试。终端设备可能会受到其他适用CTR或指令的附加要求的约束，具体取决于功能（主要功能）。本协调标准基于ETS 300 394的无线电和协议规定。本文件是TETRA终端设备的通用协调标准，然而，只有某些应用受指令91/263/EEC的约束，因此包含在CTR中。因此，有必要与相关CTR核实具体应用的适用性。

This Harmonized Standard specifies the technical characteristics to be provided by TETRA terminal equipment which is capable of connection to a Public Telecommunications Network (PTN) and which uses the TETRA technology. The objective of this Harmonized Standard is to ensure that no disturbance occurs to the PTN, and to ensure interworking btw. PTN and TETRA terminals and btw. TETRA terminal to TETRA terminal so that the communication can be routed successfully through the applicable network(s). The requirements in this Harmonized Standard apply together with the attachment requirements for the appropriate PTN and the requirement of any other applicable Harmonized Standard. It does not add or reduce the attachment requirements unless there is a particular effect on the network which is unique to TETRA. Note: appropriate PTN refers to Harmonized Standard for basic rate ISDN, Harmonized Standard for primary rate ISDN or national regulations (implemeting ETS 300 001) for PSTN. TETRA terminal equipment consists of several elements. This Harmonized Standard is structured to allow testing and approval of the individual elements as separate items. Because of the need for effective use of the radio frequency spectrum, the essential air interface characteristics shall be tested. For each essential requirement, a test is given including measurement methods. Requirements apply to the public network interface and the RF Air Interface of the equipment, which may be stimulated to perform the tests by additional equipment, if necessary. Terminal equipment may be subject to additional requirements in other applicable CTRs or Directives depending on the functionality (primary functions). This Harmonized Standard is based on the radio and protocol provisions of ETS 300 394. This document is a general Harmonized Standard for TETRA terminal equipment, however, only certain applications are subject to Directive 91/263/EEC and hence covered by a CTR. It is therefore necessary to check with the relevant CTR as to the applicability to specific applications.