• Suggested that the two protocols MAP for CAM, and TOP for CAD be separated at the database level.
• STEP (Standard for the Exchange of Product Data) based on PDES, is an international standard to facilitate the transfer of data in CAD/CAM.
• GOSIP (Government Open Systems Interconnection Profile) has been developed by the U.S. Government (NIST) to provide an open systems standard fro their computers. GOSIP is almost a subset of TOP 3.0
• TOP Protocol Layers Compared with the ISO/OSI Reference Model