Nokia Corporation

Tomi Lindgren

Raili Numminen

Markus Martin

Jaana Hurme

Soili Haapala

Vesa Blom

Esko Paldan

Kari Einamo

Petteri Mandelin

Leena Rossi

The invention relates to a method and an arrangement against fraudulent use in a telecommunications network. The invention is based on the idea that at least one fraud profile identified by an identifier is created and the identifier is included in the subscriber data of some subscribers. Based on this identifier the fraud restriction parameters of the subscriber are retrieved from the subscriber's fraud profile, and these fraud restriction parameters are used in detecting and indicating possible fraudulent use. The fraud restriction parameters include values for different service limits, such as the maximum number of call forwarding re-quests and/or the maximum number of location updates during a certain period, and possibly at least for some features an action parameter related to a service limit and implemented when the service limit is reached.

Detecting and preventing fraudulent use in a telecommunications network

The invention relates to a method and an arrangement for restricting the duration of communication in a telecommunications network. The invention is based on the idea that at least one restriction table is created with restriction parameters for monitoring the duration of sub-scriber's communication on the basis of the call type and the applicability of this restriction table to individual subscribers is indicated by a status parameter in subscriber specific data. Based on the call type, such as a forwarded or mobile originated call, the correct restriction parameter is retrieved from the restriction table for those subscribers for whom the status parameter is set &ldquo;on&rdquo; and the limiting value included in the restriction parameter is used in detecting and indicating calls of long duration. In one embodiment of the invention the restriction parameters are created to apply on the basis of call type and call direction.

Restriction of communication duration in a telecommunications network

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Vantaa, Finland

Tomi Lindgren