The authors propose an original method for addressing the ATM cells (v
ia AAL-5) that allows the detection and localisation of lost cells. Th
is method is particularly suited to the train transport MPEG-2 packet
structure, but it may be generalised for other applications. Eliminati
on of the packing delay and propagation errors, addition in to 100% ma
pping efficiency, which apply for every size of PDU, are the essential
advantages of this method.