GENERAL OVERVIEW
Sonet networks will form the back bone on which new network services will depend. The need for large bandwith, high speed transport and minimal errors make Sonet and SDH the ideal transport medium for many different transmission formats and protocols. This infrastructure will act as a bridge between private and public networks. Additionally, features inherent in the Sonet transmission abilities, direct multiplexing, add drop capabilities for multiple DSOs, and the ablitiy to support standardized network interfaces will simplify the design and management of broadband networks. Sonet equipment will eventually form the tributaries, interoffice trunks, metropolitan and suburban broandband networks. Common equipment and control formats will support data, voice and video transmissions over a variety of network structures.