Improvements in a new simultaneous voice and data communication system, with possibility of connection to public or private networks

摘要

Two new units of the system, the Digital Interconnection Unit and the Local Area Network Gateway Unit are described.;The Digital Interconnection Unit allows the connection of a base ring to another base ring, or the connection of several base rings to another ring serving as an interconnecting ring, or the connection of a base ring or of an interconection ring to a digital link. It consists of the Base Nucleus (common for all units) and four additional modules: the multiple access electronic memory module (11); the modulation/ demodulation module (12); the information control and processing module (13); and the coding, interface and adaptation module (14).;The Local Area Network Gateway Unit allows the connection of a local area network (LAN) to a base ring. It consist of the Base Nucleus (common for all units) and four additional modules: the highway bus coupling module (31); the buffer module (32); the Local Area Network Gateway Unit control module (33); and the local area network coupling module (34).