anization
(Paris).

fiber-optic cable--a 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, 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; it was initially started in Morocco in
1970 by the Arab Telecommunications Union (ATU) and was
known at that time as the Middle East Mediterranean
Telecommunications Network.

microwave radio relay--transmission of long distance
telephone calls and television programs by highly
directional radio microwaves that are received and sent on
from one booster station to another on an optical path.

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 o