The International Telecommunication Union (ITU) approved two new performance measurement standards aimed at making it easier for service providers to deploy Sealed Fibre Optics and Passive node elements. The global standards provide performance specifications for sealed optical closures in outside plant.
- ITU-T Rec. L.51 contains a summary of parameters that are relevant for the performance of optical nodes. It describes environmental classes and installation conditions, as well as circuit separation and transient losses during network maintenance activities.
- ITU-T Rec. L.13, focusing on sealed optical closures for outside plant, has been revised according to L.51. The new recommendation provides a performance specification and test plan. The user has the flexibility to select the applicable installation environment, the desired level of optical stability and a level of circuit separation.
The ITU expects to complete a similar recommendation on the performance of Optical Distribution frames (ODF) by the end of the year.
http://www.itu.int/newsroom/press_releases/2003/NP04.html