Call Processing. Billing systems can be divided into two major functions: the front-end and back-end processes. The front-end process accepts messages from a service providers’ own switches or from other telephone or billing company’s systems (called incollects), checks the validity of billing records, matches billing records to customers in a database, and provides billing details to other systems (called outcollects). The front-end process also guides billing records to specific customer accounts. Guiding uses the call detail record identification information such as the calling telephone number to match the billing record to a specific customer account. The back-end of the billing system aggregates billing records for a specific period (billing cycle), calculates recurring charges (e.g. monthly charges) and total usage charges (minutes or quantity of usage), and produces invoices. Front-End: Call Processing Each CDR is rated for billing to assign a charge (cost) for each call.
Les opérateurs télécoms.