After the 1984 NCC (National Computer Conference), Boeing attempted to promote the development of local networks based on CSMA/CD. Under the project name Technical Office Protocol (TOP), suitable protocol specifications were defined in close accordance with the procedure for the MAP protocol. Data exchange between the Manufacturing Automation
Protocol(MAP) and the Technical Office Protocol (TOP) was part of this concept from the outset.
TOP defines six application areas: Physical Access, E-mail, Document Architecture, Graphics Exchange, Product Data, and Virtual Terminal. In 1985, a convincing presentation of the feasibility of the TOP concept and communication with MAP via a gateway was demonstrated. Boeing's TOP specification version 1 was adopted in 1985. Later these activities were discontinued.