France Telecom

Orange

Olivier Dugeon

Michel Servel

Pierre Boyer

Fabrice Guillemin

Christophe Mangin

Rémi Bars

Mohamed Mahdi

Monitoring method and device

Data flows generated in accordance with a connected mode protocol and formatted in packets in accordance with a non-connected mode protocol are transmitted via an ATM network. A set of virtual circuits of the ATM network is assigned in advance to each pair of access points of the ATM network, without allocating transmission rate resources to them. When an access point receives a request, formulated in accordance with the connected mode protocol, to establish a connection between a source address and a destination address accessible via another access point of the ATM network, an available virtual circuit is selected from the set assigned to this pair of access points and a resource management cell containing a request to activate the virtual circuit is transmitted on the selected virtual circuit. When this cell is received by a node of the ATM network located on the selected virtual circuit, a transmission rate resource is allocated, if it is available, to the selected virtual circuit.

Method of transmitting data flows over an ATM network and device for implementing the method

A data transmission system has a time interval allocation system with a time interval management unit (UGIT) and a plurality of counters (CSO.sub.1 to CSO.sub.n) connected to one another in a cascaded series. The input of a counter (CSO.sub.i) is connected to the output of the preceding counter (CSO.sub.i-1) in the series. The input of the first counter (CSO.sub.1) is connected to the output of the time intervals management unit. Each counter (CSO.sub.i) is associated with an input carrying a time interval allocation demand signal (dem.sub.i) and provided with a command input for receiving the allocation demand signal (dem.sub.i) and delivering either the time interval value (ITin) present on its input if the allocation demand signal (dem.sub.i) is inactive, or the time interval value present on its input increased by a unit (ITin+1) if the demand signal (dem.sub.i) is active. The output of each counter (CSO.sub.i) is connected to the input of a register (RegAd.sub.i), having a command input for receiving the corresponding demand signal (dem.sub.i). Then, each register (RegAd.sub.i ) delivers an allocated time signal (ITa) if the corresponding demand signal (dem.sub.i) is active.

Allocation of time interval systems and multiplexers provided with one

Growing community of inventors

Pleumeur Bodou, France

Olivier Dugeon