Supplement 58 to ITU-T G-series Recommendations (02/2020) Optical transport network module framer interfaces Summary History FOREWORD Table of Contents 1 Scope 2 References 3 Definitions 4 Abbreviations and acronyms 5 Conventions 6 Introduction 7 Signal formats and rates carried over 11G electrical lanes 7.1 OTL3.4 structure 7.2 OTL4.10 structure 8 Signal formats and rates carried over 26G or 28G electrical lanes 8.1 OTL4.4 structure 8.2 OTLC.4 structure 8.3 FOIC1.4-RS structure 8.4 FOIC2.8-RS and FOIC4.16-RS structures 8.5 OTL4.4-SC structure 8.6 OTL50.2-RS and OTL50u.2-RS structures 8.7 OTU25-RS and OTU25u-RS structures 9 Signal formats and rates carried over 53G or 56G electrical lanes 9.1 FOIC1.2-RS structure 9.2 FOIC2.4-RS and FOIC4.8-RS structures 9.3 OTL50.1-RS and OTL50u.1-RS structures Bibliography