Interworking between SDH and OTN-Based Transport Networks
Authors: 
A. McGuire, A. J. FlavinAuthors Info & Claims
Abstract
This paper describes methods by which an existing SDH-based transport network can evolve towards one based on the emerging optical transport network, the OTN. Depending upon the chosen method of interworking, a number of evolutionary paths are possible. New SDH mappings are proposed that allow the construction of modems for the transport of OTN entities on SDH networks during possible transition phases. Transport of STM-N frames over SDH path layers is also considered for the provision of manageable, transparent STM-N services.
References
[1]
1 ITU-T Recommendation G.872: 'Architecture of optical transport networks', (2000).
[2]
2 ITU-T Recommendation G.975: 'Forward error correction for submarine systems', to be published (2001).
[3]
3 ITU-T Recommendation G.709: 'Network node interface for the optical transport network (OTN)', to be published (2001).
[4]
4 ITU-T Recommendation G.707: 'Network node interface for the Synchronous digital hierarchy (SDH)', to be published (2001).
[5]
5 ITU-T Recommendation G.832: 'Transport of SDH elements on PDH networks -- frame and multiplexing structures', (1998).
[6]
6 ITU-T Recommendation G.811: 'Timing requirements at the outputs of primary reference clocks suitable for plesiochronous operation of international digital links', (1997).
[7]
7 ITU Recommendation G.812: 'Timing requirements at the outputs of slave clocks suitable for plesiochronous operation of international digital links', (1998).
[8]
8 ITU Recommendation G.813: 'Timing characteristics of SDH equipment slave clocks (SEC)', (1996).
[9]
9 ITU Recommendation G.703: 'Physical/electrical characteristics of hierarchical digital interfaces', (1998).
Recommendations
Survivable virtual concatenation for data over SONET/SDH in optical transport networks
Next-generation SONET/SDH technologies--namely, generic framing procedure, virtual concatenation, and link-capacity-adjustment scheme--enable network operators to provide integrated data and voice services over their legacy SONET/SDH infrastructure to ...
New transport services for next-generation SONET/SDH systems
SONET/SDH systems have been the preferred transport technology over fiber optics for almost two decades now. Carriers have developed extensive expertise in operating, managing, and developing business models for these systems. Manufacturers' technical ...
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Copyright © Copyright © 2001 Kluwer Academic Publishers.
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Kluwer Academic Publishers
United States
Publication History
Published: 01 July 2001
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