The Digital Hierarchy List
 
Signal LevelDigital Bit RateVoice CircuitsT1DS3Carrier SystemsUsual Medium
DS064Kbps1N/AN/ANoneTwisted Pair (TP)
DS11.544Mbps241N/AT-1TP
DS1C3.152Mbps482N/AT-1CTP
DS26.312Mbps964N/AT-2Coax/Radio
DS344.736Mbps672281T-3Coax/Radio
OC151.84Mbps6722811OC1Fiber
DS3D135Mbps2,016843T-3DFiber/Radio
OC3155.52Mbps2,016843OC3Fiber
OC12622.08Mbps8,06433612OC12Fiber
OC241.244Gbps16,12867224OC24Fiber
OC482.488Gbps32,2561,34448OC48Fiber
OC25613.271Gbps172,0327,168256OC256Fiber

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Date of last revision: 17 December 2001


Extracted from the DMS training and valid Internet sources.

Prepared by Patrick Koehler. Last updated on 13 December 2001.