ETSI EN 300 823 English Printed Edition English PDF Universal Personal Telecommunication (UPT); UPT phase 2; Functional specification of the interface of a UPT Integrated Circuit Card (ICC) and Public Switched Telephone Network (PSTN), Integrated Services Digital Network (ISDN) and Global System for Mobile communications (GSM) terminals (one pass and

standard published 04/01/1999 by European Telecommunications Standards Institute