Panasonic FP-D250 User Manual page 577

Connectionless Service The transport of a single datagram or packet of information
from one network node to a destination node or multiple nodes without establishing
a network connection.
Contention The process whereby multiple users make requests for transmission
bandwidth across a transmission link but the pool of bandwidth is less than the
aggregate amount of bandwidth the users could request between them. Contention
is used to resolve which users gain access to the bandwidth. When this s applied to
multiplexerís, it is concerned with the multiplexer's ability to allow a number of channels
to contend for transmission bandwidth that is less than the sum of all the channel
rates.
Continuous Tone A photographic image which contains gradient tones from black
to white.
Contrast The tonal gradation between the highlights, middle tones and shadows in
an original or reproduction.
Controller One or more microprocessors that direct the operations of a printer, disk
drive, or multiple terminals.
Converter A repeater that also converts from one media type to another, such as
from fiber to copper. Often called a media adapter.
Cover Page A term applied to a variety of papers used for covers of catalogs,
brochures, booklets and similar pieces.
CSU (Channel Service Unit) (1) In the US, data transmission equipment to repeat
the signal from the carrier and ink to CPE. Vendors add value to CSUs by adding
performance monitoring and management. (2) In Europe, CSUs are sold for their
value features like diagnostics and performance monitoring. The basic repeating
function is prd in the NTU (networking terminating unit). CSUs monitor quality on El,
E2 or E3 circuits in terms of transmission and line loading.
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