What is CARRIER GRADE? What does CARRIER GRADE mean? CARRIER GRADE meaning - CARRIER GRADE definition - CARRIER GRADE explanation.<br /><br />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. <br /><br />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).
