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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| YD/T 4148-2022 |
Unified IMS network (second stage) and CDMA network short message signaling interworking test method {译} 统一IMS网络（第二阶段）与CDMA网络短消息信令互通测试方法 |
China Telecommunication Industry
Standards Unified IMS network |
 English PDF |
| 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 Unified IMS network |
English PDF |
| YD/T 2822-2015 |
(IMS network supports enterprise unified communications business technical requirements) 统一ims网络支持企业通信业务的技术要求 |
China Telecommunication
Standards Unified IMS network |
English PDF |
| YD/T 2463-2013 |
Technical requirements of Unified IMS network for supporting IPv6 统一ims网络支持ipv6的技术要求 |
China Telecommunication
Standards Unified IMS network |
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 Unified IMS network |
English PDF |
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