Navigation |
RET
RET chooses Black Box as supplier and advisor
RET is a public transport operator in the Rotterdam area, transporting 600.00 passengers on a daily basis. The project
Among other things RET's Information Services Department is responsible for the maintenance of the data communication network. Through this transparent network the RET-departments and accounting centers communicate with each other. Other applications run on this network as well. RET is a public transport company that apart from office locations consists of tram depots, warehouses and workshops. On these locations heavy machinery like welding machines are used, trams ride in and out as well. The magnetic fields on these locations disturb the signals that run through copper wires. That's why RET decided in 1992 to transfer to fiber optic for these specific locations, because fiber optic networks are not influenced by magnetic fields. That solved the problems on these locations. The offices on 'clean' locations still use the much cheaper copper wiring.
RET looked for a way to connect the fiber optic locations to the data communication network. At first they used hubs with a fiber optic connection at the network side, and fiber optic transceivers. Later on they used converters for the fiber optic to copper connection on the workstation side. The Information Services Department saw an increasing demand of network capacity, because more demanding applications were used, there was a significant increase in the number of users, and the number of automatic applications was growing. This created the necessity to convert from fiber optic to copper on the switch-end as well. To this end they used the Black Box media converter racks with hot swappable cards that convert from fiber optic to copper. For the workstations in the tram depots, warehouses and workshops they considered using fiber optic PC-cards, but used converters instead. Mr. John van Dokkum about Black Box: |