A monitoring system captures and processes messages from SS7 links, to compile call detail records (CDRs) for all interoffice call attempts. The CDRs are uploaded into a relational database. Automatic Message Accounting (AMA) records also are accumulated and uploaded to another relational database. A...http://www.google.de/patents/US6385301?utm_source=gb-gplus-sharePatent US6385301 - Data preparation for traffic track usage measurement
