中国国家标准:GB/T 7623-1987; Automatic answering equipment and/or parallel automatic calling equipment on the general switched telephone network， including procedures for bling of echo control devices for both manually and automatically established calls

中国国家标准检索

项目 Item	内容 Content
标准代码 Standard Code	GB/T 7623-1987
标准类别 Standard Class	GB
标准中文名称 Standard English Title	在电话自动交换网上的自动应答设备和(或)并行自动呼叫设备，包括人工和自动建立呼叫时使回波控制装置停止工作的规程
标准英文名称 Standard Chinese Title	Automatic answering equipment and/or parallel automatic calling equipment on the general switched telephone network， including procedures for bling of echo control devices for both manually and automatically established calls
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