multichannel communications cable using a thread
of optical glass fibers as a transmission medium in which the signal
(voice, video, etc.) is in the form of a coded pulse of light

HF--high-frequency; any radio frequency in the 3,000- to 30,000-kHz
range

Inmarsat-International Mobile Satellite Organization (London);
provider of global mobile satellite communications for commercial and
distress and safety applications, at sea, in the air, and on land

Intelsat--International Telecommunications Satellite Organization
(Washington, DC)

Intersputnik--International Organization of Space Communications
(Moscow); first established in the former Soviet Union and the East
European countries, it is now marketing its services worldwide with
earth stations in North America, Africa, and East Asia

landline--communication wire or cable of any sort that is installed on
poles or buried in the ground

Marecs--Maritime European Communications Satellite used in the
Inmarsat system on lease from the European Space Agency

Marisat--satellites of the Comsat Corporation that participate in the
Inmarsat system

Medarabtel--the Middle East Telecommunications Project of the
International Telecommunications Union (ITU), providing a modern
telecommunications network, primarily by microwave radio relay,
linking Algeria, Djibouti, Egypt, Jordan, Libya, Morocco, Saudi
Arabia, Somalia, Sudan, Syria, Tunisia, and Yemen (initially started
in Morocco in 1970 by the Arab Telecommunications Union (ATU) and
known at that time as the Middle East Mediterranean Telecommunications
Network)

NMT--Nordic Mobile Telephone; an analog cellular telephone system that
was developed jointly by the national telecommunications authorities
of the Nordic countries (Denmark, Finland, Iceland, Norway, and
Sweden)

Orbita--a Russian television service; also the trade name of a
packet--switched digital telephone network

radiotelephone communications--the two--way transmission and reception
of sounds by broadcast radio on authorized frequencies using telephone
handsets

satellite communication system--a communication system consisting of
two or more earth stations and at least one satellite that provides
long distance transmission of voice, data, and television; the system
usually serves as a trunk connection between telephone exchanges; if
the earth stations are in the same country, it is a domestic system

satellite earth station--a communications facility