Universal Mobile Telecommunications System (UMTS); LTE; 5G; UICC-terminal interface; Universal Subscriber Identity Module (USIM) application test specification (3GPP TS 31.121 version 18.3.0 Release 18)
NORM herausgegeben am 24.7.2025
Designation standards: ETSI TS 131121-V18.3.0
Publication date standards: 24.7.2025
The number of pages: 707
Approximate weight : 2152 g (4.74 lbs)
Country: European technical standard
Kategorie: Technische Normen ETSI