This part of EN 726 defines telecommunication features using IC cards. These telecommunication features may be used by more than one application. This part of EN 726 describes The card-terminal interface. However, when needed The system is considered as well.
EN 726-6:1995 history
1995EN 726-6:1995 Identification card systems - Telecommunications integrated circuit(s) cards and terminals - Part 6: Telecommunication features