Cart:
| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| NB/T 10806-2021 |
wall Emergency call switch {译} 墙壁紧急呼叫开关 |
China Energy Industry
Standards Emergency call |
 English PDF |
| YD/T 2887-2015 |
(Emergency call service test method (first stage) is based on a unified IMS) 基于统一ims的紧急呼叫业务测试方法（第一阶段） |
China Telecommunication
Standards Emergency call |
English PDF |
| YD/T 1406-2005 |
Technical requirements of routing and implementation for inter-network Emergency call service 公用电信网间紧急特种业务呼叫的路由和技术实现要求 |
China Telecommunication
Standards Emergency call |
English PDF |
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