China National Standards

China sessions Industry Standards English PDF List

  •  China "sessions" Industry Standards English PDF List:
    • Standard  Code Standard Title Standard Class Order
    YD/T 2541-2013 Technical requirements of emergency sessions services based on the unified IMS(Release 1)
    基于统一ims的紧急呼叫业务技术要求（第一阶段）    		 China Telecommunication Standards
    sessions
    English PDF

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