Japan's network evolution relies on SDH-based systems
- 1 November 1991
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE LTS
- Vol. 2 (4) , 14-18
- https://doi.org/10.1109/80.109222
Abstract
The commercial introduction of optical transmission systems based on the synchronous digital hierarchy (SDH) systems by Nippon Telephone and Telegraph is discussed. SDH-based systems efficiently multiplex signals, from narrowband telephone and facsimile signals to broadband video signals. All digital sources are synchronized regardless of their signal speed. The transmission system design concept, including the synchronous digital transmission system's modular structure that allows its functions to be freely increased and enhanced, and the SDH-based system deployment are described.Keywords
This publication has 3 references indexed in Scilit:
- New synchronous digital transmission system with network node interfacePublished by Institute of Electrical and Electronics Engineers (IEEE) ,2003
- Implementation and application of equipment with network node interfacePublished by Institute of Electrical and Electronics Engineers (IEEE) ,2003
- Synchronous digital transmission systems based on CCITT SDH standardIEEE Communications Magazine, 1990