Integrated Services Digital Network (ISDN);Audiovisual services; Inband signalling procedures for audiovisual terminals using digital channels up to 2 048 kbit/s (Endorsed by Asociación Española de Normalización in March of 2022.)
| AENOR | |
|---|---|
| Product Category | Standards and Technical Documents |
| Product Name | UNE-ETS 300143 Ed1 |
