
13
Commercial optical networks, overlay
networks, and services
Robert Doverspike
*
and Peter Magill
†
*
Transport Network Evolution Research AT&T Labs
Research, Middletown, NJ, USA
†
Optical Systems Research, AT&T Labs, Middletown, NJ, USA
13.1 THE TERRESTRIAL NETWORK MODEL
We will describe the architecture of today’s service and transport networks for large
terrestrial commercial carriers. It is important that those who study optical networks
have a comprehensive understanding of what generates the demand for optical
networks and the type of network architectures they comprise. A prerequisite of
such an understanding is knowledge of the classes of commerci ...