Refers to hardware and software used in large, high-speed networks. It implies extremely reliable, well tested and proven. Telephone companies, major ISPs and large enterprises purchase carrier-class equipment. Also called "carrier grade." See enterprise class and common carrier.
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In telecommunication, a "carrier grade" or "carrier class" refers to a system, or a hardware or software component that is extremely reliable, well tested and proven in its capabilities. Carrier grade systems are tested and engineered to meet or exceed "five nines" high availability standards, and provide very fast fault recovery through redundancy (normally less than 50 milliseconds).
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