The present invention relates to a process, an exchange (SW1), a charge computer (BS1), a charge billing computer (BC) and a program module in each case for an exchange (SW1), for a charge computer (BS1) and for a charge billing computer (BC) for the processing of charge data....http://www.google.com.au/patents/US6754320?utm_source=gb-gplus-sharePatent US6754320 - Process, exchange, charge computer, charge billing computer and program modules for the processing of charge data for telecommunications services
