Flexible access systems [optical pipeline]

A description is given of a means of providing the normal range of services to business customers through an optical pipeline. The system design, called a flexible access system, is in service and widespread implementation is expected. The author sets system design in the context of wider network developments and explains in detail the design features. Introduction of optical fibers into the access network is being accomplished in several phases. The first of these is the provision of direct optical fibers and their associated electronics to major customer sites. The first systems are operational