Code of China Chinese Classification Professional Classification ICS Classification Latest Value-added Services

Chinese National Standard Category: Telecommunication services

English Title: Technical Requirements of Services based on the Unified IMS Call Waiting (CW) and Call HOLD (HOLD) Services (Release 1)
Chinese Title: 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)
Standard No.: YD/T 2011-2009
Category No.: M21
Issued by: Ministry of Industry and Information Technology
Issued on: 2009-12-11
Implemented on: 2010-1-1
Status: valid
Superseded by:
Superseded on:
Abolished on:
Superseding:
Word Count:8000 words
Similar Standards: T/CCSA 242-2019   YD/T 4177.2-2022   YD/T 4167.1-2022   YD/T 4140-2022   YD/T 4177.3-2022   YD/T 4148-2022   YD/T 4147-2022   YD/T 4177.1-2022   GB/T 39579-2020   GB/T 36966-2018   T/CCSA 218-2018   T/CCSA 217-2018   T/CCSA 219-2018   YD/T 3315-2018   GB/T 32406-2015   GB/T 32404-2015   YD/T 2024-2009   YD/T 2010-2009   YD/T 2009-2009   YD/T 2011-2009  
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