本文件提供了与车载电话设备（包括自动电话、普通电池电话、无电池电话和声控电话）的通信质量、连接、安装、性能和维护相关的一般和具体建议。 它还规定了相关性能测试（车间测试和现场测试）和维护测试的要求。 不适用于数字电话、局域网（VoIP）电话和无线电话。 注:这些电话被排除在外，因为它们在本文件的详细阐述过程中处于开发阶段，因此其规格有待确定。

This document provides general and specific recommendations related to the quality of communication, connectivity, installation, performance and maintenance of onboard telephone equipment, including automatic telephones, common battery telephones, battery-less telephones and sound-powered telephones. It also specifies requirements for the related performance tests (shop tests and onsite tests) and for the maintenance tests. It is not applicable to digital telephones, LAN (VoIP) telephones, and wireless telephones. NOTE These telephones are excluded because they were under development during the elaboration of this document so that their specifications remained to be determined.