Recommendation ITU-T G.709.4/Y.1331.4 (03/2020) OTU25 and OTU50 short-reach interfaces
Summary
History
FOREWORD
Table of Contents
1 Scope
2 References
3 Definitions
     3.1 Terms defined elsewhere
     3.2 Terms defined in this Recommendation
4 Abbreviations and acronyms
5 Conventions
6 Introduction
7 Structure
     7.1 Basic signal structure
8 OTU25-RS interface
     8.1 Frame structure
     8.2 Bit rate and frame period
     8.3 Overhead
          8.3.1 CWM format
     8.4 Scrambling
     8.5 Forward error correction
     8.6 Interface format
9 OTU50-RS interface
     9.1 Frame structure
     9.2 Bit rate and frame period
     9.3 Overhead
          9.3.1 AM format
     9.4 Scrambling
     9.5 Forward error correction
     9.6 Interface format
10 Mapping OTU25 and OTU50 signal into OTU25-RS and OTU50-RS
Annex A  Forward error correction for OTU-RS using 10-bit interleaved RS(544;514) codecs
Annex B  OTU25u-RS and OTU50u-RS interfaces
     B.1 Introduction
     B.2 OTU25u-RS frame structures
     B.3 Bit rates and frame periods
     B.4 OTU25u-RS forward error correction
     B.5 Interfaces
          B.5.1 OTU25u-RS
          B.5.2 OTU50u-RS
Annex C  Forward error correction for OTU-RS using 10-bit interleaved RS(528;514) codecs
Bibliography
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