A system enables telephony services when roaming in a visited mobile network (108) to a user subscribing to a home mobile network (104) and having a prepaid account with a balance at the home mobile network (104). The system includes a home intelligent gateway (106) integrated into the visited mobile...http://www.google.fr/patents/US6975852?utm_source=gb-gplus-shareBrevet US6975852 - System and method for roaming for prepaid mobile telephone service
System and method for roaming for prepaid mobile telephone service
