| http://www.w3.org/ns/prov#value | - Billing computer 32, comprising both hardware and software, is of the type normally used in existing cellular and other telephone system but with additional modifications so as to: (1) notify the user or others of the realtime, current billing or calling rate; (2) allow the billing or calling rate to be variable; (3) allow the users to decide based on current rate information, if the call is to be
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