ISO/IEC 15521-1998 Information Technology - 3,81 mm Wide Magnetic Tape Cartridge for Informatation Interchange - Helical Scan Recording - DDS-3 Format Using 125 m Length Tapes

ISO/IEC 15507-1997 Information Technology - Telecommunications and Information Exchange between Systems - Private Integrated Services Network - Inter-Exchange Signalling Protocol - PINX Clock Synchroization ISO/IEC 15506-2003 Information Technology - Telecommunications and Information Exchange between Systems - Private Integrated Services Network - Inter-Exchange Signalling Protocol - Message Waiting Indication Supplementary Service ISO/IEC 15505-2003 Information Technology - Telecommunications and Information Exchange between Systems - Private Integrated Services Network (PISN) - Specification, Functional Model and Information Flows - Message Waiting Indication Supplementary Service ISO/IEC 15693-1-2018 Cards and security devices for personal identification - Contactless vicinity objects - Part 1: Physical characteristics ISO/IEC 15693-2-2019 Cards and security devices for personal identification - Contactless vicinity objects - Part 2: Air interface and initialization ISO/IEC 15693-3-2019 Cards and security devices for personal identification - Contactless vicinity objects - Part 3: Anticollision and transmission protocol