2000AS/NZS 4161:2000 Information Technology - Telecommunications and Information Exchange between Systems - DTE/DCE Interface Back-Up Control Operation Using ITU-T Recommendation V.24 Interchange Circuits (ISO/IEC 8480: 1995)
1993AS/NZS 4161:1994 Information processing - Data communication - DTE/DCE interface back-up control operation using the 25-pole connector