FOCIS 5 presents the intermateability standard for connectors with the commercial designation of MPO and is used as an addendum to TIA/EIA-604, Fiber Optic Connector Intermateability Standards. The provisions of TIA/EIA-604 apply to this document.
Intermateability standards define the minimum physical attributes of mating connector components. Fully dimensioned components are not within the scope or intent of FOCIS 5. The requirements of FOCIS 5 have been selected with the objectives of ensuring that any combination of plugs and adapters conforming to the requirements of FOCIS 5 will mechanically intermate and that intermated connector assemblies will meet their common level of performance.