INTERNATIONAL TELECOMMUNICATIONS NETWORKS

In order to provide overseas telecommunications, people had to develop networks that could link widely separated nations. The first networks to provide such linkage were telegraph networks that used undersea cables, but these networks could provide channels for only a few simultaneous communications. Shortwave radio also made it possible for wireless transmissions of both telegraphy and voice over very long distances.

To take advantage of the wideband capability of satellites to provide telecommunications service, companies from all over the world pooled resources and shared risks by creating a cooperative known as the International Telecommunications Satellite Organization, or Intelsat, in 1964. Transoceanic satellite telecommunications first became possible in 1965 with the successful launch of Early Bird, also known as Intelsat 1. Intelsat 1 provided the first international television transmission and had the capacity to handle one television channel or 240 simultaneous telephone calls.

Intelsat later expanded and diversified to meet the global and regional satellite requirements of more than 200 nations and territories. In response to private satellite ventures entering the market, the managers of Intelsat converted the cooperative into a private corporation better able to compete with these emerging companies. The International Mobile Satellite Organization (Inmarsat) primarily provided service to oceangoing vessels when it first formed as a cooperative in 1979, but it later expanded operations to include service to airplanes and users in remote land areas not served by cellular radio or wireline services. Inmarsat became a privatized, commercial venture in 1999.