ISO 1177:1985

Information processing - Character structure for start/stop and synchronous character oriented transmission

ISO 1155:1978

Information processing - Use of longitudinal parity to detect errors in information messages

ISO 1745:1975

Information processing - Basic mode control procedures for data communication systems

ISO 2628:1973

Basic mode control procedures - Complements

ISO 2629:1973

Basic mode control procedures - Conversational information message transfer