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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| YD/T 4119-2022 |
Technical Requirements for Lease Query Based on DHCPv4 over DHCPv6 {译} 基于DHCPv4 over DHCPv6的租约查询技术要求 |
China Telecommunication Industry
Standards Technical Requirements Lease |
 English PDF |
| 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 Technical Requirements Lease |
English PDF |
| YD/T 2295-2011 |
Technical requirements of services based on the unified IMS. Click to dial service (Release 1) 基于统一ims的业务技术要求 点击拨号业务（第一阶段） |
China Telecommunication
Standards Technical Requirements Lease |
English PDF |
| YD/T 2291-2011 |
Technical requirements of interrogating call session control function/serving call session control function (I-CSCF/S-CSCF) of the unified IMS (Release 1) 统一ims查询/服务会话控制设备（i-cscf/s-cscf）技术要求（第一阶段） |
China Telecommunication
Standards Technical Requirements Lease |
English PDF |
| YD/T 2013-2009 |
Technical requirements of services based on the unified IMS. Malicious call identification (MCID) and anonymous communication rejection (ACR) service (Release 1) 基于统一ims的业务技术要求 恶意呼叫追踪和匿名呼叫拒绝业务（第一阶段） |
China Telecommunication
Standards Technical Requirements Lease |
English PDF |
| YD/T 2011-2009 |
Technical requirements of services based on the unified IMS. Call waiting (CW) and call HOLD (HOLD) service (Release 1) 基于统一ims的业务技术要求 呼叫等待与呼叫保持业务（第一阶段） |
China Telecommunication
Standards Technical Requirements Lease |
English PDF |
| YD/T 2010-2009 |
Technical requirements of services based on the unified IMS multimedia conferencing service (Release 1) 基于统一ims的业务技术要求 多媒体会议业务（第一阶段） |
China Telecommunication
Standards Technical Requirements Lease |
English PDF |
| YD/T 1933-2009 |
Technical Requirements of Services Based on the Unified IMS IP Centrex Service(Release 1) 基于统一ims的业务技术要求 ip centerex业务（第一阶段） |
China Telecommunication
Standards Technical Requirements Lease |
English PDF |
| YD/T 1932-2009 |
Technical Requirements of Services based on the Unified IMS Identification Presentation and Restriction Service(Release 1) 基于统一ims的业务技术要求 标识显示及限制类业务（第一阶段） |
China Telecommunication
Standards Technical Requirements Lease |
English PDF |
| YD/T 1931-2009 |
Technical Requirements of Services based on the Unified IMS Call Forwarding Service(Release 1) 基于统一ims的业务技术要求 呼叫前转类业务（第一阶段） |
China Telecommunication
Standards Technical Requirements Lease |
English PDF |
| YD/T 1930-2009 |
General Technical Requirements of the Networkingfor the Unified IMS(Release1) 统一ims组网总体技术要求（第一阶段） |
China Telecommunication
Standards Technical Requirements Lease |
English PDF |
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