France Telecom

Jean-Yves Cochennec

Thierry Houdoin

Jean-Paul Quinquis

Olivier Roussel

A procedure is provided for transmitting packets of variable length, such as AAL2 packets and permitting the transmission of cells such as ATM cells, in time-division circuits such as E1/T1 frames, each divided into a number of time slots, each occupied by an eight-bit byte. The consecutive eight-bit bytes of each packet of variable length and of each cell are located in the slots of consecutive time of at least one group of time slots of the frames. The first eight-bit byte of a packet or a cell is placed at a time slot marked by a pointer occupying a specific time slot of the corresponding group of time slots.

Method for transporting variable-length packets in temporal circuit frames

A method for the simulation of transmission on an ATM transmission network and a simulator implementing the method. The simulator includes interfaces for connection with this network, there is generated a digital signal with a format and bit rate corresponding to the standards of transmission on the network, the signal being constituted by cells identifiable by headers, error-generation and the processing of this signal in order to introduce these errors therein. Application to the testing of ATM terminals.

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Trebeurden, France

Jean-Yves Cochennec