Integrated Services Digital Network (ISDN);Audiovisual services;Videoteleph
one systems and terminal equipment operating on one or two 64 kbit/s channels (Endorsed by Asociación Española de Normalización in April of 2022.)
Integrated Services Digital Network (ISDN);Audiovisual services;Videotelephone systems and terminal equipment operating on one or two 64 kbit/s channels (Endorsed by Asociación Española de Normalización in April of 2022.)
