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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| YD/T 1018-1999 |
Digital circuit multiplication equipment using ADPCM and DSI 使用自适应差分脉冲编码调制(adpcm)和数字话音插空(dsi)的数字电路倍增设备 |
China Telecommunication
Standards PCM |
 English PDF |
| JJG(YD)050-1999 |
Characteristic analyzer for PCM voice channels |
China Metrological
Standards PCM |
English PDF |
| TB/T 2676.4-1995 |
(2048kbit/s30-PCM railway communications equipment repeater technical requirements and test methods) 2048kbit/s30路脉码调制铁路通信设备中继器技术要求和试验方法 |
China Railway & Train
Standards PCM |
English PDF |
| TB/T 2676.2-1995 |
(2048kbit/s30-PCM terminal railway communications equipment test methods) 2048kbit/s30路脉码调制铁路通信设备终端机试验方法 |
China Railway & Train
Standards PCM |
English PDF |
| TB/T 2676.1-1995 |
(2048kbit/s30-PCM terminal technical requirements of railway communication equipment) 2048kbit/s30路脉码调制铁路通信设备终端机技术要求 |
China Railway & Train
Standards PCM |
English PDF |
| YD/T 753.2-1995 |
Domestic satellite communication 32kbit/s ADPCM Technical requirement for networking of SCPC voice VSAT system 国内卫星通信32kbit/s adpcm scpc话音vsat系统进网技术要求 |
China Telecommunication
Standards PCM |
English PDF |
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