21Net is a technology and service provider specialized in Broadband on Trains, which has pioneered and mastered the use of bi-directional satellite communication to trains.
The use of a satellite link as a primary bandwidth carrier guarantees the transmission of high data rates - up to 4Mbps on the downlink and 2Mbps on the uplink. Compared to terrestrial technologies such as 3G/UMTS, the 21Net satellite based solution offers a good visibility over most routes.
The deployment of the 21Net Broadband to Trains system provides an immediate availability across the whole railway network as of day One, with low investment required in trackside infrastructure - mainly for Wi-Fi connectivity in stations when the satellite link is interrupted.
Onboard trains, the Wireless Internet service provided by 21Net spans national borders, avoiding the inconveniences caused by roaming constraints.
21Net has mastered the use of highly efficient satellite capacity assignment techniques, providing a scalable and economic solution. The bandwidth allocated to a trains fleet can be adapted to the level of demand - which depends on the usage level of the Wireless Internet Service.
Compared to other satellite-based systems, the flexibility of the 21Net Broadband to Trains solution offers the best guarantee for reasonable OPEX cost .