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Publication of BE683444ApublicationCriticalpatent/BE683444A/xx
H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
H04L12/00—Data switching networks
H04L12/50—Circuit switching systems, i.e. systems in which the path is physically permanent during the communication
H04L12/52—Circuit switching systems, i.e. systems in which the path is physically permanent during the communication using time division techniques
H04L12/525—Circuit switching systems, i.e. systems in which the path is physically permanent during the communication using time division techniques involving a stored program control