Digital cellular telecommunications system (Phase 2) (GSM);Unstructured Supplementary Service Data (USSD);Stage 2 (GSM 03.90) (Endorsed by Asociación Española de Normalización in October of 2022.)
| AENOR | |
|---|---|
| Product Category | Standards and Technical Documents |
| Product Name | UNE-ETS 300549 Ed2 |
