A system and method for monitoring the activity of a mobile subscriber in a GSM-based PLMN system from an Intelligent Network (IN) telecommunications system comprising several Intelligent Peripherals (IPs) connected to a Service Control Point (SCP) over a network. The detailed technique is automatically...http://www.google.fr/patents/US6058303?utm_source=gb-gplus-shareBrevet US6058303 - System and method for subscriber activity supervision
System and method for subscriber activity supervision