Abstract: In order to route a data packet in a communication network, a network element implements a traditional routing process including taking a routing decision as a function of the destination of the data packet according to route learning in the communication network. The routing element reviews the routing decision taken by the traditional routing process via an internetwork policy-based routing function selected from among a plurality of candidate internetwork policy-based routing functions, each candidate internetwork policy-based routing function being assigned to an egress interface of the network element and vice versa. The selected internetwork policy-based routing function is that which is assigned to the egress interface selected by the traditional routing process for routing the data packet in the communication network.

Abstract: Detection of the congestion on a link based on an exchange of messages between a sender and a receiver, one sender and several receivers or several senders and one receiver. This equipment is connected to the ends of a transmission channel. One of the items of equipment is designated as the master and the others slaves. These exchanges are aimed at enabling the master to calculate and compare the rate of the data send and the rate of the data received. A divergence in the rates calculated reveals a congestion on the link. All these exchanges are made in the application layer and therefore do not involve the underlying layers.

Abstract: In order to detect congestion on a transmission link, endpoint items of network equipment are associated with congestion-detection applications. Per class of service, one application sends to the other control messages indicating volumes of data transmitted by the concerned item of network equipment via the transmission link. On reception of the control messages, the other application obtains information on volumes of data received by the other item of network equipment. By determining a first divergence in volumes of data transmitted between two control messages and a second divergence in volumes of data received, between two control messages, this other application is able to detect a situation of congestion on the transmission link occurring for one or more classes of service, and to generate an alarm signal accordingly.

Abstract: Detection of the congestion on a link based on an exchange of messages between a sender and a receiver, one sender and several receivers or several senders and one receiver. This equipment is connected to the ends of a transmission channel. One of the items of equipment is designated as the master and the others slaves. These exchanges are aimed at enabling the master to calculate and compare the rate of the data send and the rate of the data received. A divergence in the rates calculated reveals a congestion on the link. All these exchanges are made in the application layer and therefore do not involve the underlying layers.

Abstract: Detection of the congestion on a link based on an exchange of messages between a sender and a receiver, one sender and several receivers or several senders and one receiver. This equipment is connected to the ends of a transmission channel. One of the items of equipment is designated as the master and the others slaves. These exchanges are aimed at enabling the master to calculate and compare the rate of the data send and the rate of the data received. A divergence in the rates calculated reveals a congestion on the link. All these exchanges are made in the application layer and therefore do not involve the underlying layers.

Abstract: First and second applications are executed in a red domain, and a third application is executed in a black domain, with a lower security level, and via which a ciphered communication tunnel passes between the first and second applications. The first application transmits to the second application a nominal sequence of packets ordered according to their respective sizes; said nominal sequence is intercepted by the third application which, when it wishes to transmit information to the red domain, modifies said nominal sequence by deleting at least one packet, each deleted packet being dependent on said information; on reception of a sequence of packets supposed to be the nominal sequence of packets, the second application checks whether at least one packet has been deleted; and, if such is the case, the second application retrieves said information from the size of each packet thus deleted.

Abstract: In order to detect congestion on a transmission link, endpoint items of network equipment are associated with congestion-detection applications. Per class of service, one application sends to the other control messages indicating volumes of data transmitted by the concerned item of network equipment via the transmission link. On reception of the control messages, the other application obtains information on volumes of data received by the other item of network equipment. By determining a first divergence in volumes of data transmitted between two control messages and a second divergence in volumes of data received, between two control messages, this other application is able to detect a situation of congestion on the transmission link occurring for one or more classes of service, and to generate an alarm signal accordingly.

Abstract: A method for managing the service policy applied to a black network comprising a radio link and to a red network connected to this black network managed by a predetermined set of profiles is proposed. The congestion of the radio link is detected by any means by the black domain. The congestion of the radio link is detected by a method for detecting congestion which operates by means of exchanges within the red domain. A service policy profile then established matches for each domain to a detected congestion level.

Abstract: A service admission control method in a communication network comprising at least one group of at least one node per group, the method comprising the steps: Receive a service establishment attempt from one group; and admit the service in the network depending on the granularity of the network topology, the link topology and/or the partitioning of the link topology.

Abstract: A method for managing the service policy applied to a black network comprising a radio link and to a red network connected to this black network managed by a predetermined set of profiles is proposed. The congestion of the radio link is detected by any means by the black domain. The congestion of the radio link is detected by a method for detecting congestion which operates by means of exchanges within the red domain. A service policy profile then established matches for each domain to a detected congestion level.

Abstract: Detection of the congestion on a link based on an exchange of messages between a sender and a receiver, one sender and several receivers or several senders and one receiver. This equipment is connected to the ends of a transmission channel. One of the items of equipment is designated as the master and the others slaves. These exchanges are aimed at enabling the master to calculate and compare the rate of the data send and the rate of the data received. A divergence in the rates calculated reveals a congestion on the link. All these exchanges are made in the application layer and therefore do not involve the underlying layers.

Abstract: A point-to-multipoint or multipoint-to-multipoint communication network comprises at least one management center and remote traffic stations, between which radio links sharing resources allocated dynamically by the management center have been established.

Abstract: A service admission control method in a communication network comprising at least one group of at least one node per group, the method comprising the steps: Receive a service establishment attempt from one group; and admit the service in the network depending on the granularity of the network topology, the link topology and/or the partitioning of the link topology.

Abstract: The present invention relates to inspection reports for certifying that a particular event has actually taken place at a particular date or time, and, where appropriate, at a particular place. The invention provides an inspection apparatus (100) including, in a secure casing, a central processing unit (1), a digital audiovisual device (2) such as a camera and/or a video camera and/or a sound recorder, a clock (3), and a watermarker (4) capable of embedding temporal information provided by the clock (3) in the data stream coming from the audiovisual device (2). The apparatus (100) may include, in addition to the above-mentioned devices and depending upon the application envisaged, supplementary incorporated measuring instruments providing digital data, in particular a geographic position measuring device (5) such as a GPS.