Abstract: A system for establishing a client/server type relationship in a hybrid peer to peer network connects a first peer (20a) to a second peer (20d) implementing a predetermined function (F) in that peer to peer network. To this end, the first peer (20a) has a superpeer (10a) capable of establishing a list (LF) of the active peers (20d, 20e) implementing the function (F) in the service of the peers of the network and of sending that list (LF) to its peer (20a). The first peer (20a) can then establish a client/server type relationship with a second peer (20d) selected in that list (LF).

Abstract: This messaging system is for use in a peer to peer network including at least one depositary peer (PX, PR) adapted to store a message in one or more portions and to send a message notifying the completion of the storage of that portion to at least one superpeer (SPX) of the peer (PX) of the depositor (X) of the message (M). This superpeer (SPX) is adapted to send a notice of reception of the message to a peer (PY) of the addressee (Y) of that message, that notice including a list of the depositary peers (PX, PR) and an identifier of each of the portions of said message stored by each of the depositaries (PX, PR).

Abstract: A method for determining the dynamics of a logical network, said network comprising a plurality of communication nodes (21, 24, 26, i, k). The method comprises obtaining (31), in a node (21) of the network, of at least one item of information (Li, Jk) relating to a modification of the neighborhood of said node, in the course of a predetermined period. The method also comprises determining (33), in said node of the network, of a local dynamics corresponding to at least one sum ( ? i ? L ? ? i , ? k ? J ? ? k ) of at least part of the information obtained.

Abstract: A message management method, for use when a depositor (X) wishes to send a message (M) to an addressee (Y), includes a step of the depositor (X) sending a call invitation (INV1) to a call router (10) to set up a call to the addressee (Y), a step of the router (10) identifying a depositary peer in a peer-to-peer network (1) that is available and has sufficient resources (HD) for storing the message (M), and a step of setting up a communication stream (FC) between the depositor (X) and the depositary (PR) for storing the message in the resources (HD) of the depositary peer.

Abstract: A method for determining the dynamics of a logical network, said network comprising a plurality of communication nodes (21, 24, 26, i, k). The method comprises obtaining (31), in a node (21) of the network, of at least one item of information (Li, Jk) relating to a modification of the neighborhood of said node, in the course of a predetermined period. The method also comprises determining (33), in said node of the network, of a local dynamics corresponding to at least one sum ( ? i ? L ? ? i , ? k ? J ? ? k ) of at least part of the information obtained.

Abstract: A system for establishing a client/server type relationship in a hybrid peer to peer network connects a first peer (20a) to a second peer (20d) implementing a predetermined function (F) in that peer to peer network. To this end, the first peer (20a) has a superpeer (10a) capable of establishing a list (LF) of the active peers (20d, 20e) implementing the function (F) in the service of the peers of the network and of sending that list (LF) to its peer (20a). The first peer (20a) can then establish a client/server type relationship with a second peer (20d) selected in that list (LF).

Abstract: This messaging system is for use in a peer to peer network including at least one depositary peer (PX, PR) adapted to store a message in one or more portions and to send a message notifying the completion of the storage of that portion to at least one superpeer (SPX) of the peer (PX) of the depositor (X) of the message (M). This superpeer (SPX) is adapted to send a notice of reception of the message to a peer (PY) of the addressee (Y) of that message, that notice including a list of the depositary peers (PX, PR) and an identifier of each of the portions of said message stored by each of the depositaries (PX, PR).

Abstract: A method for managing a database in a communication network comprising the following steps: at least some of a segment to be copied from the database is copied to a copied segment; at least one node which is part of the communication network and intended to receive the copied segment is selected; wherein the node is selected on the basis of a capacity information item which is characteristic of it.

Abstract: The present invention provides a system associated with a terminal (30) of a telecommunications line (10), the system being characterized by the fact that it comprises: at least one detector of local and behavioral parameters intrinsic to the use of the terminal concerned; an analyzer device (60) for analyzing pertinent parameters to determine that an off-hook state of the line (10) is inappropriate on the basis of the signal from the sensor (50); and a control device (70) for controlling line seizing and suitable for causing the telecommunications line (10) to be deactivated in the on-hook position when said analyzer device (60) determines that the off-hook state of the line (10) is inappropriate.