Recommendation ITU-T G.709.5 (03/2024) Flexible OTN 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 and applications
7 Structure and processes
     7.1 Basic signal structure
     7.2 Processing and information flow
8 FlexO frame
9 Overhead
     9.1 Alignment markers
     9.2 FlexO-1-RS alignment markers
     9.3 FlexO-2-RS alignment markers
     9.4 FlexO-4-RS alignment markers
     9.5 FlexO-8-RS alignment markers
10 FlexO mapping procedures
11 100G FlexO-1-RS interface
     11.1 Frame structure
     11.2 Bit rate and frame periods
     11.3 Scrambling
     11.4 Forward error correction (FEC)
     11.5 FOIC1.k-RS interface
          11.5.1 FOIC1.4-RS interface
          11.5.2 FOIC1.4-RS skew tolerance requirements
          11.5.3 FOIC1.4-RS 28G lane bit rate
          11.5.4 FOIC1.1-RS interface
          11.5.5 FOIC1.1-RS skew tolerance requirements
          11.5.6 FOIC1.1-RS 112G lane bit rate
12 200G FlexO-2-RS interface
     12.1 Frame structure
     12.2 Bit rate and frame periods
     12.3 Scrambling
     12.4 Forward error correction (FEC)
     12.5 FOIC2.k-RS interface
          12.5.1 FOIC2.4-RS interface
          12.5.2 FOIC2.4-RS skew tolerance requirements
          12.5.3 FOIC2.4-RS 56G lane bit rate
          12.5.4 FlexO-2-RS interface processes
13 400G FlexO-4-RS interface
     13.1 Frame structure
     13.2 Bit rate and frame periods
     13.3 Scrambling
     13.4 Forward error correction (FEC)
     13.5 FOIC4.k-RS interface
          13.5.1 FOIC4.8-RS interface
          13.5.2 FOIC4.8-RS skew tolerance requirements
          13.5.3 FOIC4.8-RS 56G lane bit rate
          13.5.4 FlexO-4-RS interface processes
          13.5.5 FOIC4.4-RS interface
          13.5.6 FOIC4.4-RS skew tolerance requirements
          13.5.7 FOIC4.4-RS 112G lane bit rate
14 800G FlexO-8-RS interface
     14.1 Frame structure
     14.2 Bit rate and frame periods
     14.3 Scrambling
     14.4 Forward error correction (FEC)
     14.5 FOIC8.k-RS interface
          14.5.1 FOIC8.8-RS interface
          14.5.2 FOIC8.8-RS skew tolerance requirements
          14.5.3 FOIC8.8-RS 112G lane bit rate
          14.5.4 FlexO-8-RS interface processes
Annex A  Forward error correction for FlexO-x-RS using 10-bit  RS(544,514) codecs
     A.1 Generic processing and common code structure
     A.2 FlexO-1-RS FEC codeword adaptation
     A.3 FlexO-2-RS and FlexO-4-RS FEC codeword adaptation
     A.4 FlexO-8-RS FEC codeword adaptation
Bibliography