satellite communications teleport network vsat broadband mobile voice data internet video secure encrypt "homeland security" "rapid deployment" "disaster recovery" internationalglobal geostationary geosynchronous orbit "space segment" "u.s. civilian government" "u.s. military" nato contractors defense defence "end-to-end" "integrated services" "managed services" "terrestrial fiber" "lease lines"

introduction and overview to the intelsat general corporation web site covering satellite communications networks from 64 kbps to 155 mbps