Official definition

This industry comprises establishments primarily engaged in providing specialized telecommunications services, such as satellite tracking, communications telemetry, and radar station operation. This industry also includes establishments primarily engaged in providing satellite terminal stations and associated facilities connected with one or more terrestrial systems and capable of transmitting telecommunications to, and receiving telecommunications from, satellite systems. Establishments providing Internet services or Voice over Internet protocol (VoIP) services via client-supplied telecommunications connections are also included in this industry. Establishments in this industry do not operate as telecommunications carriers. Illustrative Examples: Dial-up Internet service providers Internet service providers, using client-supplied telecommunications connections (e.g., dial-up ISPs) Satellite tracking stations VoIP service providers, using client-supplied telecommunications connections Cross-References. Establishments primarily engaged in--