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ATM network rate, and then choose the proper SFP optical module based on transmission distance. Specifications Currently, the NE80 supports two types of OC-3/STM-1 ATM optical interface boards (CR-A4CFF and CR-A8CFF) and one type of OC-12/STM-4 ATM optical interface board (CR-A2HFF). Module name Interface type CR-A4CFF...