SINGLE SIGN-ON FOR USERS OF A PACKET RADIO NETWORK ROAMING IN A MULTINATIONAL OPERATOR NETWORK

摘要

The invention provides a system and a method basically oriented for providing Single Sign-On services for a user roaming in a packet radio network of a Multinational Mobile Network Operator that includes a federation of National Network Operators, one of these National Network Operators holding the user's subscription. In particular, the telecommunications system includes a number of Service Providers having service agreements with the Multinational Mobile Network Operator federation for offering Single Sign-On services to subscribers of any National Network Operator included in the federation.