Arrangement for call forwarding in a mobile services...

Details Arrangement for call forwarding in a mobile services... Arrangement for call forwarding in a mobile services...

H - Electricity

04

M

H04M 3/54 (2006.01) H04Q 7/24 (2006.01) H04Q 7/36 (2006.01) H04Q 7/38 (2006.01)

Patent

CA 2207423

The present invention relates to an improvement in a mobile services switching center, employed for preventing and endless call forwarding between a mobile subscriber and a subscriber located in the service area of another switching center in a case where the subscribers have activated a call forwarding to each other. It is possible to prevent endless call forwarding in a mobile services switching center by storing the directory number of the forwarding subscriber in a special-purpose database (16) during the call forwarding. The contents of the database are compared to the directory number of the forwarding subscriber in connection with every call forwarding call. If, during the checking, the directory number of the forwarding subscriber is found in the database, the call control (13) of the mobile services switching center discontinues the call set-up.

L'invention concerne un système qui permet d'améliorer le centre de commutation mobile en empêchant le renvoi d'appel permanent entre un abonné mobile et un abonné situé dans la zone de service d'un autre centre de commutation, lorsque les deux abonnés ont déclenché le renvoi d'appel l'un vers l'autre. Il est possible d'empêcher le renvoi d'appel permanent dans un centre de commutation mobile en enregistrant le numéro d'annuaire de l'abonné qui effectue le renvoi dans une base de données spécifique (16) pendant le renvoi d'appel. L'opération consiste à comparer l'information de la base de données avec le numéro d'annuaire de l'abonné qui effectue le renvoi pour chaque demande de renvoi d'appel. Si, au cours de cette vérification, le numéro d'annuaire de l'abonné qui effectue le renvoi est identifié dans la base de données, la fonction de contrôle d'appel (13) du centre de commutation mobile interrompt l'établissement de la communication.

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