Integrated Services Digital Network (ISDN);Circuit mode structured bearer service category usable for 3,1 kHz audio information transfer;Terminal requirements necessary for end-to-end compatibility (Endorsed by Asociación Española de Normalización in March of 2022.)
| AENOR | |
|---|---|
| Product Category | Standards and Technical Documents |
| Product Name | UNE-ETS 300084 Ed1 |
