Principles of Synchronous Digital Hierarchy

508 Principles of Synchronous Digital Hierarchy

The devices and products required for high-end synchronized TDM tech-

nologies are much costlier than those required for data transport; thus, the

initial capital cost of the project will be low in the case of data transport net-

works. The operations and maintenance cost will also be less because much

of the provisioning and reconguration required will be done automatically

in the pure data environment, in contrast to each provisioning being carried

out by experts, involving time and expense in the case of OTN. Instead of

OTN, Ethernet OTN or a packet transport network is required for the next ...