What is another word for closed-circuit?
Pronunciation: [klˈə͡ʊzdsˈɜːkɪt] (IPA) 
Closed-circuit is a term often used to describe a communication system or network that is self-contained and secure. Other synonyms for closed-circuit include restricted, private, confidential, exclusive, and non-public. These terms all convey a sense of privacy and exclusivity, suggesting that the communication system or network is not open to the public or easily accessible to outsiders. Other related terms include limited access, protected, secure, and proprietary, all of which emphasize the idea that the system is carefully controlled and closely monitored to prevent unauthorized access or tampering. Whatever the specific term used, closed-circuit refers to a network or system that is carefully contained and controlled.
