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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| YD/T 2975-2015 |
(Unified IMS network supports multi-mode single standby voice call continuity of the technical requirements) 统一ims网络支持多模单待语音呼叫连续性的技术要求 |
China Telecommunication
Standards Requirements the Unified |
 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 Requirements the Unified |
English PDF |
| YD/T 2425-2012 |
Technical requirements of the session border controllerin unified IMS 统一ims中的会话边界控制设备技术要求 |
China Telecommunication
Standards Requirements the Unified |
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 Requirements the Unified |
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 Requirements the Unified |
English PDF |
| YD/T 2187-2010 |
Technical requirements for Home Subscriber Server (HSS) of the unified IMS (Phase 1) 统一ims归属用户服务器（hss）设备技术要求（第一阶段） |
China Telecommunication
Standards Requirements the Unified |
English PDF |
| YD/T 2186-2010 |
Technical requirements for Proxy Call Session Control Function (P-CSCF) of the unified IMS (Phase 1) 统一ims代理会话控制设备（p-cscf）技术要求（第一阶段） |
China Telecommunication
Standards Requirements the Unified |
English PDF |
| YD/T 1522.6-2010 |
Technical Requirements for Session Initiation Protocol. Part 6: Interworking between BICC and SIP Based on the Unified IMS 会话初始协议（sip）技术要求 第6部分：与承载无关的呼叫控制（bicc）协议与统一ims网络sip协议的互通 |
China Telecommunication
Standards Requirements the Unified |
English PDF |
| YD/T 1522.5-2010 |
Technical requirements for session initiation protocol. Part 5: Session initiation protocol based on the unified IMS 会话初始协议（sip）技术要求 第5部分：统一ims网络的sip协议 |
China Telecommunication
Standards Requirements the Unified |
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 Requirements the Unified |
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 Requirements the Unified |
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 Requirements the Unified |
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 Requirements the Unified |
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 Requirements the Unified |
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 Requirements the Unified |
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 Requirements the Unified |
English PDF |
| YD/T 1929-2009 |
Requirements for the Unified IMS(Phase 1) 统一ims的需求（第一阶段） |
China Telecommunication
Standards Requirements the Unified |
English PDF |
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