This standard specifies the data transmission services, optional user facilities and DTE services of my country's public data network and integrated services digital network (ISDN). This standard applies to public data networks and integrated services digital networks.
GB/T 11590-1999 history
2011GB/T 11590-2011 International data transmission services and optional user facilities in public data networks and ISNDs
1999GB/T 11590-1999 International data transmission services and optional user facilities in public data networks and ISDNs