CASE SiteWatch telematics uses GSM cellular communications, the choice of cellular signal will be made automatically by the telematics device. We have contracted with the leading cellular providers in North America including AT&T, T-Mobile and Rogers Wireless. If cell signal is not available, the device collects and stores your data then forwards it when the network is available. Add-on satellite communications coverage is in development. Details for satellite communication availability and cost are forthcoming.