Abstract: The process for controlling the power supply (16) of a telephone (1) of a cellular radiotelephone network (2), of which the transmission power (13) is controlled (14) by the network (2) according to a power class indicated by the telephone (1), consists of determining the charge level of the power supply (16), deducing the maximum transmission power able to be reached, according to the charge level, comparing the maximum transmission power and the transmission power controlled (14) by the network (2), and downgrading the mobile telephone (1) if the former is lower than the latter (14).

Abstract: After making to an agreement with a mobile telephony operator (123), an entity (130) may offer his customers the possibility of sending SMS messages free of charge. The sending of messages is then actually subsidized by the entity. A user (101) of this method then indicates his wish to send a message free of charge, and the entity subsidizes the sending of this message along with a second message to the same recipient. The contents of the second message can be chosen by the entity. This second message is composed automatically by the server (123) if it detects a flag, in the message, indicating that a first message is being conveyed through a subsidy from the entity. The conveyance of such messages may be limited in number and time. The contents of the second message are selected from a list that may be updated by the entity.

Abstract: According to the method of high bit rate data transmission between a sender appliance (9) and receiver appliances (1, 2, 3, 4) of a digital radiotelephony network, the data are transmitted to these receiver appliances through a group of common broadcasting paths when the former present a data reception request.

Abstract: A mobile radio-telephone terminal includes a radio means activated by a chip card. The chip card includes a memory containing a subscriber identification word (PIN, IMSI) and is connected to an input of a comparator. The terminal comprises means for receiving the card connected to the radio means and the memory for inputting a particular identification word (PIN, PINUT), associated with the card and is connected to the other input of the comparator. The terminal comprises means for transcoding the input word (PINUT), to match it with the card, to control the activation of the radio means from the subscriber identification word.

Abstract: The mobile radio-telephone terminal comprising radio means (7) arranged to be activated by a chip card (10),

Abstract: A radio-telephone terminal includes connection structure which connects to a radio-telephone network, a telephone handset and a data adaptation circuit arranged to be connected to a data transmission apparatus. The adaptation circuit is integrated into the terminal and can include a microprocessor arranged to manage vocal telephone communications and the data passing through the adaptation circuit.