TESTING OF TELECOMMUNICATIONS EQUIPMENT FOR USE IN ANOUTSIDE PLANT ENVIRONMENT

摘要

No matter if it is plain old telephone service (POTS) or a passive fiber-optic network (PON) the physical infrastruc-turernis a key element in service reliability and the ability of the network to support advanced services. In the past few years,rnwe have seen the telecommunications outside plant (OSP) network continue to evolve and change. In the years to come, thernOSP will grow in complexity and sophistication. This is true in both the F1 feeder network from the central office to therncross-box, and F2 from the cross-box to the subscriber; these entities taken together are commonly referred to as the last mile.rnAs DSL, fiber to the premise, fiber to the curb, gigabit Ethernet service delivery platforms continue to grow, equipment thatrnwas traditionally located in the central office will be located remotely. Therefore, where we once had a centralized network,rnthe network of today and in the future will be more distributed and diverse.rnDue to network distribution, the reliability of the OSP becomes more critical. Issues like corrosion, heat and remoternpower become more critical. The equipment used in the OSP is subjected to heavy rain, snow, ice, high winds, cold tempera-tures,rnextremely hot temperatures, air pollution, salt laden atmospheres, vibrations, earthquakes, wild fires, high altitudes, etc.rnTherefore, to help ensure the reliability of network operability, the proper design, manufacture, installation, and maintenancernof the subject equipment(s) becomes more critical. Moreover, just as important is the proper environmental testing of outdoorrntelecommunications equipment. This paper reviews requirements, test methods and criteria for reviewing OSP telecommuni-cationrncabinets.