This standard establishes the design requirements for a fibre optic serial interconnect protocol, topology, and media. The application target for this standard is the interconnection of multiple aerospace sensors, processing resources, bulk storage resources and communications resources onboard aerospace platforms. The standard is for subsystem interconnection, as opposed to intra-backplane connection. The purpose of this standard is the specification of a highly reliable and fault tolerant fiber optic network, that is compatible with harsh thermal, mechanical, and radiation environments of aerospace applications requiring small size and low power dissipation. Current standards do not cover data rate needs above 200 Mbps. This standard will specify a node-to-node operating data range of 200 Mbps through 1 Gbps. The standard will define physical and logical protocol, and sub-network management functions which allow mixing high-speed synchronous ans asynchronous distributed access for deterministic communications. New IEEE Standard - Inactive-Withdrawn. The design requirements for a fiber-optic serial interconnect protocol, topology, and media is established. The application target for this standard is the interconnection of multiple aerospace sensors, processing resources, bulk storage resources, and communications resources onboard aerospace platforms. This standard is for subsystem interconnection, as opposed to intra-backplane connection.