E.118
E.118
ITU-T Recommendation
E.118 is an international standard that defines the international telecommunication charge card, for use in payphones.[1] It also defines the Integrated Circuit Card Identifier (ICCID), which is used in Subscriber Identity Modules (SIMs, including SIM cards and eSIMs.[2] The standard was first developed in 1988 by what became the Standardization Sector of the International Telecommunication Union (ITU-T) with several revisions having been published since then.