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Please specify your question about QUAD OC3/STM1 MMF UNI/NNI clei The quad OC3/STM1 MMF UNI/NNI Card is a ATM interface card operating at the SONET OC3 rate of 155 Mbps per port. The multi-mode fiber (MMF) optical interface has a typical rangeof 2km. The quad OC3 is compliant to the requir *