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Chinese National Standard Category: Telecommunication services

English Title: Code Number and Dialing Procedure of Universal Personal Telecommunication, Wide Area Centrex Switch (WAC), Vote of Telephone (VOT) and Mass Calling (MAS) Services
Chinese Title: 通用个人通信(UPT)、广域集中用户交换机(WAC)、电话投票(VOT)和大众呼叫(MAS)的编号和拨号程序
Standard No.: YDN 030.2-1997
Category No.: M21
Issued by: Ministry of Posts and Telecommunications
Issued on: 1997-4-1
Implemented on: 1997-5-1
Status: valid
Superseded by:
Superseded on:
Abolished on:
Superseding:
Word Count:3000 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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