scope:

The purpose of the present document is to provide specifications for ATM equipment to be used in the ETSI region. These specifications seek to define the processes associated with ATM rather than specific equipment types. Such specifications will ensure compatibility between equipment by identifying which functions within a process are mandatory for interworking and which can be considered as truly optional. It is not the intention to prevent manufacturers or procurers from following an alternative specification, but the consequences should become clear from the present document.