APPENDIX I GLOSSARY

A

AUTHENTICATION- A security measure designed to protect a communications or command system against fraudulent transmissions or simulation.

AUTOMATIC DIGITAL NETWORK (AUTODIN)- A worldwide automatic communications system that provides automatic data service.

B

BEADWINDOW- A term describing a real-time procedure used to alert circuit operators that an unauthorized disclosure has occurred.

CARRIER- the unmodulated signal originally produced in the oscillator section of a transmitter.

CONFIDENTIAL- Information the unauthorized disclosure of which could reasonably be expected to cause damage to the national security.

CRYPTOSYSTEM- Information encompassing all the associated items of cryptomaterial that are used together to provide a single means of encryption or decryption.

D

DEFENSE SWITCHED NETWORK (DSN)- A nonsecure telecommunications telephone interconnected network among military and other government installations (formerly AUTOVON).

DIRECTED NET- A net in which member stations must obtain permission from the net control station (NECOS) prior to communicating with other stations on the net.

E

EMISSION CONTROL (EMCON)- General or specific restrictions placed on electromagnetic radiations for a particular area or areas.

F

FREE NET- A communications net of which member stations need not obtain permission of the net control station (NECOS) to transmit.

G

GATEGUARD- A security subsystem that allows commands to interface directly with the AUTODIN system as part of the NSTA program.

L

LOCAL HOLDER- A command or activity whose COMSEC material needs are met by drawing the material from a single CMS account.

M

MANUAL RELAY CENTER MODERNIZATION PROGRAM (MARCEMP)- An automation support system for all aspects of HF message relay

operation in the Fleet Center.

P

PROSIGNS- Letters, or combinations of letters, that convey frequently sent orders or instructions in a simple, standard format.

PROWORDS- The phonetic equivalent of prosigns.

S

SECRET- Information the unauthorized disclosure of which could reasonably be expected to cause serious damage to the national security.

SECURE TELEPHONE UNIT THIRD

GENERATION (STU-III)- Desktop phone unit that provides users with both clear and secure voice and data transmissions.

SEED KEY- Special keying material used for the initial electronic set-up of the STU-III terminal.

SERVICE MESSAGE- A short, concise message between communication personnel requiring prompt attention.

C

APPENDIX II

GLOSSARY OF ACRONYMS AND ABBREVIATIONS

A

AGT- AUTODIN Gateway Terminal AIG- Address indicating groups AIS- Automated Information System AIT- AUTODIN Interface Terminal ASC- AUTODIN Switching Center AST- AUTODIN Subscriber Terminal AUTODIN- Automatic Digital Network

AUTOVON- Automatic Voice Network

B

BIU- BUS interface unit

C2- Command and control CAI- Communication Action Identifier CDPS- Communication Data Processing System

CIC- Combat Information Center; Content Indicator Code

CIK- Crypto-ignition key

CIN- Component identification number

CMS- Communications Security Material System COMSEC- Communications security

COMNAVCOMTELCOM- Commander, Naval Computer and Telecommunications Command

CUDIXS- Common User Digital Information Exchange System

CSN- Channel service number

D

DCS- Defense Communications System DSN- Defense Switched Network

E

EDPE- Electronic data processing equipments EEFI- Essential Elements of Friendly Information EMCON- Emission control EOM- End of message EWC- Electronic warfare coordinator

F

FIFO- First-in-first-out FLTSATCOM- Fleet Satellite Communications

G

GD- Guard device

GMT- Greenwich mean time

H

HARPS- Hybrid AUTODIN Red Patch Service

HERO- Hazards of Electromagnetic Radiation to Ordnance

I

I/O- Input and output

K

KMC- Key Management Center

L

LDMX- Local Digital Message Exchange LH- Local Holder

M

MAN- Message accountability number

MARCEMP- Manual Relay Center Modernization Program

MLPP- Multilevel precedence and preemption

C

MSL- Master Station Log

MS/DOS- Microsoft(r) Disk Operating System MTTS- Magnetic tape terminal station

N

NAVCOMPARS- Naval Communications Processing and Routing System

NAVMACS- Naval Modular Automated

Communications System

NCS- Net Control Station NECOS- Net Control Station NST- Navy Standard Teleprinter NSTA- Navy Standard Teleprinter Ashore

NTC- Naval Telecommunications Center

O

OAS- Office automation system

OPDEC- Operational deception OPSEC- Operational security OTAR- Over-the-air Rekey

OTAT- Over-the-air Transfer

P

PCMT- Personal Computer Message Terminal PLA- Plain language address

R

RAM- Random-access memory

RI- Routing indicator

RIXT- Remote Information Exchange Terminals

R/T- Radiotelephone

S

SID- Subscriber identification

SOPA- Senior officer present afloat

SSIXS- Submarine Satellite Information Exchange Subsystem

SSN- Station serial number

STU-III- Secure Telephone Unit Third Generation

SUSDUPE- Suspected duplicate

T

TCC- Telecommunications Center

V

(V)- Version (e.g., (V)5...fifth version)

VDT- Video display terminal

W

WWMCCS- Worldwide Military Command and Control System