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Synchronous Digital Hierarchy - an overview and Network Architecture
The rapid development of telecommunication technologies, particularly in the area of data transport in broadband telecommunications services such as video conferencing, remote database access etc requiring flexible high quality networks with a high level of protection and demand for minimisation of manual control by automatic software controlled network management led to the design of a new family of equipments and new network topologies based on Synchronous Digital Hierarchy (SDH).
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