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Paper Abstract and Keywords
Presentation 2026-04-27 13:55
[Invited Talk] ITU-T Standardization Trends for Optical Transport Networks
Kengo Shintaku (NTT) PN2026-2
Abstract (in Japanese) (See Japanese page) 
(in English) Optical Transport Network (OTN) is a Layer 1 protocol applied to optical transmission systems that provide long-haul, high-capacity transport in carriers’ transport networks. The signal structure and multiplexing hierarchy of OTN have been standardized in ITU-T Study Group 15 Question 11, and OTN has been continuously enhanced not only to support higher capacities but also to incorporate various functions required in each era. This paper first outlines the signal structure and multiplexing technologies of existing OTN, and then introduces recent standardization trends for OTN beyond 1 Tbit/s, referred to as Beyond 1T OTN, which is currently under discussion.
Keyword (in Japanese) (See Japanese page) 
(in English) ITU-T / Optical Transport Network / Beyond 1T OTN / G.709 / FlexO / / /  
Reference Info. IEICE Tech. Rep., vol. 126, no. 10, PN2026-2, pp. 3-7, April 2026.
Paper # PN2026-2 
Date of Issue 2026-04-20 (PN) 
ISSN Online edition: ISSN 2432-6380
Copyright
and
reproduction		 All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF PN2026-2

Conference Information
Committee PN QCN  
Conference Date 2026-04-27 - 2026-04-27 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
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Paper Information
Registration To PN 
Conference Code 2026-04-PN 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) ITU-T Standardization Trends for Optical Transport Networks 
Sub Title (in English)  
Keyword(1) ITU-T  
Keyword(2) Optical Transport Network  
Keyword(3) Beyond 1T OTN  
Keyword(4) G.709  
Keyword(5) FlexO  
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1st Author's Name Kengo Shintaku  
1st Author's Affiliation NTT, Inc. (NTT)
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Speaker Author-1 
Date Time 2026-04-27 13:55:00 
Presentation Time 50 minutes 
Registration for PN 
Paper # PN2026-2 
Volume (vol) vol.126 
Number (no) no.10 
Page pp.3-7 
#Pages 5 
Date of Issue 2026-04-20 (PN) 

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