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1 Scope 112 References 113 Terms and definitions 124 Abbreviations 145 Conventions 176 Optical transport network interface structure 186.1 Basic signal structure 196.1.1 OCh substructure 196.1.2 Full functionality OTM n.m (n ≥ 1) structure 196.1.3 Reduced functionality OTM nr.m and OTM 0.m structure 206.2 Information structure for the OTN interfaces 207 Multiplexing/mapping principles and bit rates 247.1 Mapping 267.2 Wavelength division multiplex 277.3 Bit rates and capacity 277.4 ODUk Time Div
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