TM ll-5895-1412-12&PREFERENCE INFORMATION (CONT’D)GLOSSARY OF COMSEC AND CEOI TERMSALTERNATE NET - The net used when the primary net communications cannot bemaintained due to jamming or interference.AUTHENTICATION - A security measure designed to protect a communicationssystem against acceptance of a fraudulent transmission or simulation byestablishing the validity of a transmission, message or originator.AUTHENTICATION SYSTEM - Authentication systems are provided to preventunauthorized stations from entering friendly radio nets. There are twomethods of authentication: challenge and reply and transmissionauthentication.BATTLEFIELD ELECTRONIC CEOI SYSTEM (BECS) - System includes the BGU and itsperipherals.The purpose of BECS is to eliminate NSA-produced paper CEOIsystems, to reduce response time and to increase user’s flexibility.BASIC GENERATION UNIT (BGU) - The personal computer (Hewlett-Packard HP-110/111) component of BECS, plus the peripheral devices: the disk drive andprinter.CALL SIGN - A three-character combination of letter-number-letter used toidentify a command, activity unit or element in establishing and maintainingcommunications.CALL SIGN SHARING - Allows different nets to be assigned the same call signsfor each time period.CLASS - A grouping of up to 20 zones.The total frequency requirement for aclass equals the number of nets in the largest zone. Nets selected for areuse plan are grouped into zones and classes.COMMUNICATIONS-ELECTRONICS (CE) - Embraces the design, development,installation, operation, and maintenance of electronics and electromechanicalsystems associated with the collecting, transmitting, storing, processing,recording, and displaying of data and information associated with all forms ofmilitary communications.COMMUNICATIONS-ELECTRONICS OPERATION INSTRUCTIONS (CEOI) - A series of ordersissued for technical control and coordination of the CommunicationsElectronics operations of a command or activity. It provides guidance neededto insure the speed, simplicity, and security of communications. The CEOInormally contains call sign assignments, frequency assignments, suffixes,signs and countersigns, pyrotechnic and smoke signals, and completesupplemental instructions.COMMUNICATIONS SECURITY (COMSEC) - Measures taken to prevent unauthorizedpersons from gaining information of value from your communication. COMSECincludes: (l)crypto-security; and (2)transmission security; and (3)emissionsecurity; and (4)physical security of communications security materials andinformation.1-10
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