Abstract: An exemplary method and apparatus are provided for establishing a communication between a first communication terminal and a second communication terminal over a network. A server dynamically generates a first single-use key and a second single-use key respectively associated with the first and second communication terminals as a function of time data related to at least one previous communication between the first communication terminal and the second communication terminal, during a request to establish a call from the first communication terminal to the second communication terminal. The server compares the first and second keys that were generated, and authorizes the establishment of the communication if the compared keys are identical.

Abstract: To manage a continuity of telephone service in relation to a user associated with a communication terminal (TC) and with at least one communication device (DC), a server (SC) connected to the communication terminal and to the communication device is able to power off the communication terminal following detection of an event relating to the absence of the user close to the communication terminal, and to enable call forwarding from the communication terminal to the communication device based on a user profile. The server is also able to power on the communication terminal following detection of an event relating to the presence of the user close to the communication terminal, and to disable the call forwarding from the communication terminal to the communication device.

Abstract: In order to establish a communication between a first communication terminal (TC1) and a second communication terminal (TC2) over a telecommunications network (RT), a server (SC) dynamically generates a first single-use key (K1) and a second single-use key (K2) respectively associated with the first and second communication terminals as a function of time data (DonT) related to at least one previous communication between the first communication terminal (TC1) and the second communication terminal (TC2), during a request to establish a call from the first communication terminal (TC1) to the second communication terminal (TC2). The server compares the first and second keys that were generated, and authorizes the establishment of the communication if the compared keys are identical.

Abstract: To manage a continuity of telephone service in relation to a user associated with a communication terminal (TC) and with at least one communication device (DC), a server (SC) connected to the communication terminal and to the communication device is able to power off the communication terminal following detection of an event relating to the absence of the user close to the communication terminal, and to enable call forwarding from the communication terminal to the communication device based on a user profile. The server is also able to power on the communication terminal following detection of an event relating to the presence of the user close to the communication terminal, and to disable the call forwarding from the communication terminal to the communication device.

Abstract: The mobile station comprises Traffic Identification Encryption means (TIE) and a memory (54) for storing at least one authentication number (A-key). According to the invention, the protection system comprises a program (61) for encrypting during operation the A-key by the TIE means, and for storing (A1) the encrypted A key, and a program (62) for decrypting, according to the TIE means, the A-key when its non-coded use is needed in the mobile station.