Digital cellular telecommunications system (Phase 2) (GSM);Line identification supplementary services;Stage 2 (GSM 03.81 version 4.8.1) (Endorsed by Asociación Española de Normalización in October of 2022.)
| AENOR | |
|---|---|
| Product Category | Standards and Technical Documents |
| Product Name | UNE-ETS 300542 Ed3 |
