Radiotelephone system for a limited group of users

Details Radiotelephone system for a limited group of users Radiotelephone system for a limited group of users

H - Electricity

04

Q

H04Q 7/22 (2006.01) H04Q 7/30 (2006.01) H04Q 7/38 (2006.01)

Patent

CA 2181833

In order to set up a simple and inexpensive radiotelephone system (PRS) for a limited group of users, the invention proposes equipment (MONE) which connects at least one commercially available non-mobile radiotelephone station (BTS 1, BTS2) with a telecommunications network (PSTN) via standard interfaces (PCM30, Abis). The equipment includes a subscriber database (ID) and means (MM) for checking whether a transmitted subscriber-identification signal (IMSI) authorizes the subscriber to access the system (PRS). In addition, the equipment controls the putting through and termination of calls (CC) as well as the non-mobile radio station control unit (RR). A radiotelephone (MS) authorized to access the system (PRS) is reliably connected to the nearest non-mobile radiotelephone station (BTSI) at least for the duration of the call.

Pour constituer de manière simple et peu coûteuse un système radiotéléphonique (PRS) destiné à un groupe privé d'utilisateurs, l'invention propose un dispositif (MONE) qui relie au moins un poste radiotéléphonique fixe du commerce (BTS1, BTS2) à un réseau de télécommunications (PSTN) par l'intermédiaire d'interfaces normales (PCM30, Abis). Le dispositif en question comporte une banque de données abonnés (ID) et des moyens (MM) servant à vérifier si un code abonné (IMSI) qui a été envoyé donne le droit d'accéder au système radiotéléphonique (PRS). En outre, le dispositif commande l'établissement et la suppression des liaisons téléphoniques (CC) et la commande des postes radiotéléphoniques fixes (RR). Un radiotéléphone (MS) ayant le droit d'accès au système radiotéléphonique (PRS) est, tout au moins pendant la durée de la liaison, relié de manière fixe au poste radiotéléphonique fixe (BTS1) le plus proche.

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