Abstract: Disclosed is a carrier network fulfilling a distributed virtual routing function, said carrier network comprising one or more components, each of the components comprising at least two nodes communicating with one another by means of an artery, a node comprising a an access function. At least one component of said network comprises the following elements: several bridge ELANs, each bridge ELAN being connected to a virtual network VLAN, at least one transit ELAN, all access functions of the same component being adjacent through said transit ELAN, and at the level of an access function: router LEC means adapted to connect the access function to at least one bridge ELAN associated with a VLAN means for the identification of the VLANs serviced by the access function, means (transit LEC) to connect the transit ELAN to the access function.

Abstract: Disclosed is a virtual router distributed on a carrier network, said carrier network comprising one or more components, each of the components comprising at least two nodes communicating with one another by means of an artery, a node comprising a FAx access function and server functions (LES/BUS, LECS, MPS). At least one component of said network comprises the following elements: several ELANi-bridges, each ELANi-bridge being connected to a virtual network VLANi, at least one transit ELAN, Tx, at the level of an access function Fax, LEC router means Rix adapted to connecting the access function FAx to at least one ELANi associated with a VLANi, means (Lx) for the identification of the VLANi serviced by the access function FAx, means (LEC transit) to connect-the transit ELAN to the access function. Use of a distributed virtual router ATM type carrier networks and IP data packets.

Abstract: A method for the routing of information in a network comprises several communication nodes that may be mobile, the routing being done by a route between a source node and a destination node through a set of wireless communication links between the nodes of the network, the entire set forming a graph wherein the method comprises at least one step in which the graph of the network is structured as a unicast two-way link in order to obtain the relationships existing between two nodes and form, during routing decisions, sub-graphs comprising arcs that connect two nodes, the arcs sharing one and the same set of properties.

Abstract: A method for the control of flows particularly within an ATM switch transmission network with a distributed architecture. The method distributes a specified number n of shapers to each input line card, a specific shaper being dedicated to the VBRnrt (Variable Bit Rate non real time) category flows as a function of the totalized mean bit rate, and n−1 other shapers being adjusted as a function of the available bit rate (AVCR) of the output ports.

Abstract: The invention relates to a process for translating an ATM cell header for the routing thereof on a transmission highway of a communication network via an ATM switch. The header of the cell includes a first field VPI and a second field VCI, the first field VPI identifying a virtual path number and the second field VCI selecting a specified virtual channel within the virtual path. The process includes in] storing indirect addressing context page numbers in a first major table (3), storing context page numbers for the circuits in VP switching mode in a second major table (4), storing context page numbers (7) for the circuits in VC switching mode in indirect addressing (5) context pages (2), addressing the context pages (7) of circuits in VC switching mode by way of an indirect addressing (5) context page on the basis of the first major table (3) and of the field VCI, and addressing the context pages (9) of the VP switching mode on the basis of context page numbers contained in the second major table (4).

Abstract: A device for ATM cell switching having failure tolerance. The device is divided into two types of equipment modules. The first type includes connecting modules while the second type includes two branching and managing modules, one operating in an active mode while the other operates in a passive mode. An accessing device is implanted in each connector. Devices to execute the ATM layer function are almost identically implanted in each connector and in each of the two branching and managing modules. A supervision bus connects both types of modules to ensure quick and automatic reconfiguration of the device in case of failure in one of its components. The supervising bus is of simple configuration and only serves to carry, under the control of the managing module, signals indicative of the master and slave managing means as well as a signal indicative of the active branching module.

Abstract: A process for detecting upstream congestion within an ATM switch. The switch includes several junctions linked together by a cross-connector. In each input junction, the number of incoming cells bound for a same specified output port of a junction are counted. Results of the count supplied by the input junctions are transferred to the output port. Results of the counts in the output junction are aggregated and a congestion is declared in the output port if the aggregate number of cells is greater than a specified threshold value.

Abstract: The method consists in distributing a specified number n of shapers (91 . . . 9n) to each input line card (7i), a shaper being dedicated to the VBRnrt (Variable Bit Rate non real time) category flows as a function of the totalized mean bit rate and the n−1 other shapers being adjusted as a function of the available bit rate (AVCR) of the output ports. Application to ATM transmission networks.

Abstract: Disclosed is a virtual router distributed on a carrier network, said carrier network comprising one or more components, each of the components comprising at least two nodes communicating with one another by means of an artery, a node comprising a FAx access function and server functions (LES/BUS, LECS, MPS).

Abstract: Method for the production of vanillic acid and vanillin by bioconversion from ferulic acid in a medium containing phospholipids cultured with at least one microorganism from the classes Ascomycetes, Basidiomycetes or Actinomycetes. Vanillin is also produced by bioconversion of vanillic acid by at least one microorganism of the class Basidiomycetes in a medium containing cellobiose.

Abstract: Method for the production of vanillic acid and vanillin by bioconversion from ferulic acid in a medium containing phospholipids cultured with at least one microorganism from the classes Ascomycetes, Basidiomycetes or Actinomycetes. Vanillin is also produced by bioconversion of vanillic acid by at least one microorganism of the class Basidiomycetes in a medium containing cellobiose.