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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| 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 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 |
China National Standards answering |
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