Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Publication of BE440760ApublicationCriticalpatent/BE440760A/xx
H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
H04L12/00—Data switching networks
H04L12/02—Details
H04L12/14—Charging, metering or billing arrangements specially adapted for data communications, e.g. authentication, authorisation and accounting [AAA] framework
H—ELECTRICITY
H04—ELECTRIC COMMUNICATION TECHNIQUE
H04M—TELEPHONIC COMMUNICATION
H04M17/00—Prepayment of wireline communication systems, wireless communication systems or telephone systems
H04M17/02—Coin-freed or check-freed systems, e.g. mobile- or card-operated phones, public telephones or booths