| http://www.w3.org/ns/prov#value | - On a periodic basis, for example monthly, the billing system 108 of the wireless carrier 102 generates a bill to subscribers of the wireless carrier 102 including charges for basic wireless services subscribed to by the subscriber and charges associated with individual calls, if required. [0021] The subscriber data system 106 includes general purpose computing systems, memory, and software applica
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