closed-circuit communications system

closed-circuit communications system

[¦klōzd ¦sər·kət kə‚myü·nə′kā·shənz ‚sis·təm]
(communications)
A communications systems which is entirely self-contained, and does not exchange intelligence with other facilities and systems.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.