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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| YD/T 4213-2023 |
Technical Requirements for Monitoring and Intercepting International Fraudulent calls {译} 国际诈骗电话监控拦截技术要求 |
China Telecommunication Industry
Standards calls |
 English PDF |
| YD/T 2638.2-2013 |
Technical requirements for priority calls in public communication network. Part 2: CDMA network 公众电信网优先呼叫技术要求 第2部分:CDMA网络 |
China Telecommunication
Standards calls |
English PDF |
| YD/T 2540.1-2013 |
Technical requirements for priority calls in public telecommunication network. Part 1: GSM/TD-SCDMA/WCDMA network 公众电信网优先呼叫技术要求 第1部分：gsm/td-scdma/wcdma网络 |
China Telecommunication
Standards calls |
English PDF |
| TB 2130.7-1990 |
(Train dispatching calls. Bidirectional repeaters technical requirements and test methods) |
China Railway & Train
Standards calls |
English PDF |
| TB 2130.5-1990 |
(Train dispatching calls. Carrier repeater technical requirements and test methods) |
China Railway & Train
Standards calls |
English PDF |
| TB 2130.4-1990 |
(Train dispatching calls. Tandem distributor technical requirements and test methods) |
China Railway & Train
Standards calls |
English PDF |
| TB 2130.3-1990 |
(Train dispatching calls. Call me the technical requirements and test methods for the election call) |
China Railway & Train
Standards calls |
English PDF |
| TB 2130.1-1990 |
(Train dispatching calls. Switchboard technical requirements) |
China Railway & Train
Standards calls |
English PDF |
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