Glossary, Acronyms, and Abbreviations - IIUSA

CNI - communication, navigation, identification
CNIDR - clearinghouse for network information and discovery and
retrieval
CNIU - communications/navigation interface unit
CNM - customer network management
CNO - Chief of Naval Operations
CNO - computer network operations
CNOS - corporate network operating system
CNR - carrier-to-noise ratio
CNR - combat net radio
CNRI - combat net radio interface
CNS - channel networking service
CNS - communications, navigation and surveillance (FAA)
CNS - complementary network service
CNS - converged network services
CNSS - Core Nodal Switching Subsystem [Internet]
CNTG - Computer Network Transaction Groups
CNTL - control
CNV - VINSON cryptonet variable
CNX - certified network expert
CO - central office
CO - Commanding Officer
co - company
COA - central operating authority (NATO)
COA - course of action
COAM - customer owned and maintained equipment
COAST - computer operations, audit and security technology
COAX - coaxial cable
COBOL - common business oriented language
COBRA - common object request broker architecture
COCOM - Combatant Commander, combatant command
COCOMO - constructive cost model
CODEC - compression/decompression
Codec - COder/DECoder. A device which takes digitized audio and
"codes" it in order to reduce the transmission bit rate and which
can also simultaneously "decode" such coded audio. Strictly
speaking, a codec does not include an ISDN terminal adaptor and
relatedequipment.
COE - Common Operating Environment
COEA - cost and operational effectiveness analysis
COFDM - coded orthogonal frequency division multiplexing
COFF - common object file format
CofS - Chief of Staff
COI - community of interest
COIL - Chemical Oxygen-Iodine Laser
COINS - community online intelligence system
COM - character oriented messages
COMALF - commander, airlift forces comm communications
COMB - combiner
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Combination - Trunk - A trunk (channel) which can both make and
receive calls. This generally refers to analog ground start or loop
start trunks, although the term can be applied to ISDN BRI or PRI
channels as well. Each combination trunk normally has a
telephone number, although they are frequently part of a hunt
group and only one number may be published for that group. Also
called a Both Way Trunk. This is not the same as a Two-way DID
trunk. See DID Trunk, Hunt Group and Trunk
COMCAM - combat camera
COMINT - communications intelligence
COMM - communications
Common - Carrier - A company that furnishes communications
services to the general public and is regulated by appropriate
state or federal agencies.
Common - Channel Interoffice Signaling - See CCIS
Common - Equipment - Standard equipment that is shipped with
nodes to provide basic functionality. It includes modules (such as
the SX, BX, PPM and PSM for the Promina 800) as well as card
shelves, power supply trays, and power supplies.
Companding - Derived from COMpressor and exPANDer,
companding is the process of logarithmically compressing the
dynamic range of an input signal at the transmitter and expanding
it back to almost original form at the receiver.
COMPES - contingency operations/mobility planning and execution
system
Competitive - Local Exchange Carrier - See CLEC
COMPFEC - compressed with forward error correction
Composite - Loopback - Loopback of the DS0B bundle.
Compression - Application of any of several techniques that reduce
the number of bits needed to represent information in data
transmission or storage. It conserves bandwidth and memory so
the original form of the information can be reconstructed.
Compression is also known as compaction.
Compression - Level - A level assigned to each voice port that
defines the amount of compression needed on all calls originating
from that channel. If a call cannot be set up to satisfy the
assigned compression level or that satisfies the default standard
of 64 kbps Pulse Code Modulation (PCM), no call is placed.
COMPUSEC - computer security
COMSAT - communications satellite
COMSEC - Communications Security
COMSIM - communications simulation system
COMSPOT - communications spot report
COMSTAT - communications status report
COMSTATSUM - communications status summary report
CONAUTH - controlling authority
Concatenation - The linking of transmission channels end to end.
Concentration - The basic premise is to share facilities wherever
possible. For instance, while there may be thousands of
customers served by a given Central Office, there will be
substantially less than that number of calls which can be handled
simultaneously. And even fewer long distance calls can be made
simultaneously. The art of Traffic Engineering is to have enough
capability that calls are rarely blocked, but not any more than that.
See also Choke Exchange and Blocking.
Conditioning, - Line - The addition of equipment to a leased voicegrade
channel to improve analog characteristics to allow higher
rates of data transmission.
CONEXPLAN - contingency and exercise plan