Telespazio Highway System Video Surveillance (LinkWay)Telespazio Highway System Video Surveillance (LinkWay)
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Telespazio S.p.A., fully owned by Telecom Italia S.p.A., is a worldwide leader in provisioning of satellite services. The company is active in designing, installing, and managing rural networks integrating simplified cellular (wireless local loop) and VSAT technology.
Using LINKWAY 2000 VSATs from ViaSat Inc., Telespazio provides a reliable, bandwidth efficient Wide Area Network for monitoring highway traffic throughout Italy.
Telespazio's network consists of 65 terminals, Ku-band frequency on a EUTELSAT satellite, and medium resolution digital video cameras.
Telespazio evaluated various satellite products and technologies before selecting LINKWAY for its ability to reduce space segment consumption. LINKWAY frequency-reuse (or bandwidth-on-demand) features cut bandwidth use by as much as 40%. This efficiency proves to be important for Telespazio's network because each video monitoring station is active for only a very short period of time. During any one location's inactive periods, the spectrum is efficiently redirected to active sites. In this way, the total bandwidth requirement for the network is far less than if each site maintained a dedicated circuit whether it was transmitting or not.
The LINKWAY 2000 terminal is a cost-effective seamless extension for voice, data and multimedia networks. Advantages of using LINKWAY for highway monitoring include:
- Ability to support multiple video sources per terminal; one multicast per terminal selected.
- Individual video sources remotely controlled with Unicast IP (for pan, zoom, focus).
- Multiple simultaneous multicasts per control group.
- Multiple control groups and simultaneous multicasts.
- Ability to switch video streams on demand using IP bandwidth-on-demand (multicast ramp down speed).
- Multicast video streams over IP to aggregation sites for monitoring (Unicast IP allows database access of license plate information).
- Flexible VSAT network that can operate in star, mesh or hybrid topology.
- Operates with multiple carriers and data rates to fit application, and expand as needs grow.
- Reed-Solomon error correction substantially reduces space segment power consumption.