Cart:
Keyword:
| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| TB/T 3025-2016 |
(Railway Digital voice Recorder) 铁路数字式语音记录仪 |
China Railway & Train
Standards Digital voice |
 English PDF |
| YD/T 1328-2015 |
(Digital cellular mobile communication network voice service billing system metering performance technical requirements and test methods) 数字蜂窝移动通信网语音业务计费系统计费性能技术要求和检测方法 |
China Telecommunication
Standards Digital voice |
English PDF |
| TB/T 3220-2010 |
Digital voice recording device on board |
China Railway & Train
Standards Digital voice |
English PDF |
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