A CDE Definition
An electronic system that is online and operating 24 hours a day. Every server and network device in the Internet is always-on, and home networks are also generally kept running 24/7. Entertainment set-top boxes such as cable TV, Apple TV, Roku and the like are always-on. Although a dial-up technology, connecting to an ISDN network was so fast that it gave the appearance of being always-on.
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