A grouping of users who generate a majority of their traffic in calls to other members of the group.
Note: The community of interest may be related to a geographic area or to an administrative organization. Synonym special interest group.

The reception of emissions from a space station in the broadcasting-satellite service by receiving equipment, which in some cases may be complex and have antennae larger than those used for individual reception, and intended for use:
by a group of the general public at one location;
or
through a distribution system covering a limited area. [NTIA] [RR]

The definition of the basic security principles and policy for a community of interconnected systems thereby allowing a series of bilateral SISPs to be produced while preserving the security of the whole. [CESG]. See also: System Interconnection Security policy.

Coordinated Multi-Point

See data compaction.

See CD ROM.

See data compaction.

An operation in which the dynamic range of signals is compressed before transmission and is expanded to the original value at the receiver.
Note: The use of companding allows signals with a large dynamic range to be transmitted over facilities that have a smaller dynamic range capability. Companding reduces the noise and crosstalk levels at the receiver.

A device that incorporates a compressor and an expander, each of which may be used independently.

A unique four-character alphanumeric code that identifies service providers.