Abstract: The downloading of data from a server into one (Cn) of the portable communicating objects (C1 CN), such as chip cards or mobile terminals, over a radiocommunications network involves: a preprocessing of data (PRET) in the server into at least one data message intended for the communicating object; a sending (E) of the data message from the server to the communicating object; a reception (R) by the server of an acknowledgement of reception by the communicating object, and; a post-processing of data (POST) in the server contingent on the acknowledgement of reception. The pre-processings of data (P1) and post-processings of data (P3) concerning the communicating objects are respectively executed before and after sending the data message and receiving the acknowledgements of reception (P2) concerning the communicating objects. The server communicates with the radiocommunications network only during the sending and receiving of messages.

Abstract: The invention solves the problem of systematic image marking of portable communicating objects, such as smart cards or mobile terminals, involved in a campaign in a database connected to a downloading server, thereby releasing the server. Access to a communicating object targeted by the campaign is authorized for a single-unit operation while the server manages the preprocessing of data for the communicating object during the campaign. Access is inhibited for a single-unit operation concerning an object targeted by the campaign when access is requested while the server manages transmission of a data message to the communicating object during the campaign. Access is also prohibited while the server manages an acknowledgement transmitted by the communicating object and the post-processing of data concerning the communicating object.

Abstract: Each communication occupying a direct mode channel comprises the transmission between mobile terminals of signals distributed into traffic time slots and into regularly dispersed control time slots during which one of the mobile terminals transmits synchronization and signaling signals. Some of the terminals determine standby time slots aligned with the control slots and continuing after the communication, and place themselves in a receive state on the channel during the aligned standby slots, with idle periods between said standby slots.

Abstract: The downloading of data from a server into one (Cn) of the portable communicating objects (C1 CN), such as chip cards or mobile terminals, over a radiocommunications network involves: a preprocessing of data (PRET) in the server into at least one data message intended for the communicating object; a sending (E) of the data message from the server to the communicating object; a reception (R) by the server of an acknowledgement of reception by the communicating object, and; a post-processing of data (POST) in the server contingent on the acknowledgement of reception. The pre-processings of data (P1) and post-processings of data (P3) concerning the communicating objects are respectively executed before and after sending the data message and receiving the acknowledgements of reception (P2) concerning the communicating objects. The server communicates with the radiocommunications network only during the sending and receiving of messages.

Abstract: The invention solves the problem of systematic image marking of portable communicating objects, such as smart cards or mobile terminals, involved in a campaign in a database connected to a downloading server, thereby releasing the server. Access to a communicating object targeted by the campaign is authorized for a single-unit operation while the server manages the preprocessing of data for the communicating object during the campaign. Access is inhibited for a single-unit operation concerning an object targeted by the campaign when access is requested while the server manages transmission of a data message to the communicating object during the campaign. Access is also prohibited while the server manages an acknowledgement transmitted by the communicating object and the post-processing of data concerning the communicating object.

Abstract: A communications system, particularly a PMR system, for transmitting voice and/or data, for a plurality of individual subscribers, is characterized in that each subscriber has at least one subscriber terminal, at least one object characterization is assigned to each subscriber terminal, and upon the object communication request of a subscriber, the communications system establishes an object communication, wherein the assignment of the at least one object characterization takes place only by storing the at least one object characterization in the subscriber terminal, and each subscriber terminal decides on the basis of the object characterization(s) contained therein on the entry into the object communication requested by the subscriber. A method of transmitting voice and/or data is also provided.

Abstract: The invention concerns a method whereby each of the communication using the channel comprises transmission between mobile terminals (11-13) of signals distributed into traffic time intervals and uniformly distributed control time intervals during which one of the mobile terminals transmits synchronising and signalling signals. Some at least of the terminals determine standby time intervals aligned on the control intervals and maintained after communication, and are set in reception on the channel during the standby time intervals, with idle periods between said standby time intervals.