Integrated Services Digital Network (ISDN);Syntax-based videotex lower layer protocols for ISDN packet mode (CCITT Recommendation X.31 Case A and Case B) (Endorsed by Asociación Española de Normalización in May of 2022.)
| AENOR | |
|---|---|
| Product Category | Standards and Technical Documents |
| Product Name | UNE-ETS 300218 Ed1 |
