The invention concerns a method and a device for requesting subscriber communication to a communication system. Said communication system comprises a communication terminal having a first transmission/reception unit for a radio interface and a portable device having a second transmission/reception unit for the radio interface, for data exchange. Data concerning an authentication of the subscriber are exchanged through the radio interface. Once authentication is successfully completed, the subscriber request for communication with the communication system is granted.

 
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> Portable telephone terminal device and a method for restricting pay service for using the terminal device

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