GB/T 11589-1999 International user classes of service in, and categories of access to, public data networks and integrated services digital networks (ISDNs) (English Version)
This standard specifies the user service categories and access types of my country's public data network and ISDN, and defines the data signal transmission rate, call control signal rate, and the working method and access type of data terminal equipment. This standard applies to the user service categories and access types of public data networks and integrated services digital networks.
GB/T 11589-1999 history
2011GB/T 11589-2011 International user classes of service in, and categories of access to, public data networks and integrated services digital networks(ISDNs)
1999GB/T 11589-1999 International user classes of service in, and categories of access to, public data networks and integrated services digital networks (ISDNs)