A process for transmitting data in a network adapted for isochronous and asynchronous transmissions and comprising a sender and at least one receiver. The process comprises the steps of:

• opening an isochronous transmission channel between the sender and the receiver;
• dispatching by the sender through the isochronous channel of a plurality of start of transmission indicator packets until reception of an acknowledgement of receipt on the part of the receiver,
• following the reception of the acknowledgement of receipt by the sender, dispatching by the sender through the isochronous channel of at least one payload packet;
• following the detection of the poor reception of a packet, dispatching by the receiver of an error message to the sender;
• in case of reception by the sender of an error message dispatched by the receiver, resumption of the transmission of payload data onwards of the error;
• dispatching by the sender through the isochronous channel of an end of message packet following the transmission of all the payload data.

The invention also provides a process for receiving data comprising the steps of error detection hereinabove, from the point of view of a receiver, as well as a sending process comprising the steps of dispatching the start of transmission indicator packets and awaiting acknowledgement of receipt indicator packets, from the point of view of a sender.