SONET/SDH are point-to-point synchronous networks that use TDM multiplexing across a ring or mesh physical topology. These provide the Physical layer foundation for FDDI, SMDS, and ATM implementations.
SONET is the synchronous optical network. It was introduced by Bell Communications in 1984 and quickly accepted by American National Standards Institute (ANSI). In 1988, the Consultative Committee for International Telegraph and Telephony (CCITT) published a similar set of standards called synchronous digital hierarchy (SDH). The International Committee regionalized the standards for international differences in Europe, Japan, and North America.
SONET/SDH are true optical implementations. They take advantage of the bandwidth and high reliability of the fiber optic medium. Because they are typically WAN standards, SONET/SDH use point-to-point connection types. The point-to-point architecture makes the standards ideal for high and centralized systems or WAN backbones. In addition, they use time division multiplexing over a mesh or ring physical topology. SONET/SDH are the physical foundation for various high-end implementations, including:
Finally, SONET/SDH communications support various data rates ranging from Level One (51.84 Mb/s) to Level Twelve (622.08 Mb/s) all the way up to Level Forty-Eight (2.488 Gb/s).
Broadband Networking : ATM, SDH, and Sonet (Artech House Telecommunications Library) - Based on the bestselling book Transmission Networking: SONET and the Synchronous Digital Hierarchy, this is a comprehensive survey of the state-of-the-art in the design, planning, and management of digital transport networks. Principles, architectures, standards, and interfaces are described and explained with clarity and authority by the authors, who are internationally-renowned experts. The classic edition has been expanded to include: New regulatory developments; ATM principles and information formats; Broadband signaling, connection control, and network-level management; Traffic performance and management; Resilience in a multilayer transport network; Practical information on design and implementation: Network planning and tools; An expanded look at network performance and synchronization. This book provides a wealth of practical experience and insights drawn from the knowledge of pioneers in the field. It is an invaluable guide for professionals involved in transport network design, planning, implementation, and management. This is a comprehensive survey of the state-of-the-art in e design, planning, and management of digital transport networks. Principles, architectures, standards, and interfaces are described and explained with clarity and authority by authors who are internationally-renowned experts. It is an invaluable guide for professionals involved in transport network design, planning, implementation, and management.
Understanding Sonet/SDH and ATM : Communications Networks for the Next Millennium (Science and Technology Series) - Provides practicing engineers, managers, and students with a useful guide to the latest developments and future trends of three major technologies: SONET, SDH and ATM, and a brief introduction to legacy TDM communications systems. Softcover. CD-ROM included. DLC: SONET (Data transmission).
Understanding Sonet SDH : Standards & Applications - Understanding SONET/SDH Standards and Applications is now in its 6th printing since originally published in 1996. It has received acceptance on a global basis, with many favorable comments. This book is an extensive treatment of SONET/SDH standards with practical examples of typical field applications. While it is not intended to be an introductory text for beginners, the format follows a logical sequence that introduces the topics that would be covered in a standard SONET/SDH course. The text is detailed, but easy to understand, and contains numerous illustrations that describe real life applications. The material is explained at a high level, and then is further refined to present complex concepts. This book is a good reference work that will definitely be used as a refresher when encountering new network designs, product applications, or job assignments.