China 'GB/T 21564.4-2008
' standard english version:
NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 21564.4-2008
Message formats and protocols for serial data interfaces in alarm transmission systems - Part 4: Common transport layer protocol 报警传输系统串行数据接口的信息格式和协议 第4部分:公用传输层协议
Issued Date:2008-03-24
Implemented Date:2008-09-01
Issued by:
The Standardization Administration of the People's Republic of China