Abstract: Apparatus, operating in a digital communication system, for interconnecting a primary or a secondary network to an output port. The primary and secondary networks are redundant networks having point-to-point topologies (125, 130) or point-to-multi-point topologies (210, 215). When connected in a point-to-point network topology that supports extended superframe format (ESF), the apparatus functions as an error correction switch and; when connected in a point-to-multi-point network topology, the apparatus functions as a DS1/0 protection switch. In its receiver aspect, the apparatus stores frames of digital data received from each of two redundant networks, inspects certain error codes contained in the received data and, in response to these error codes, selects the digital data originating from one of the networks that does not exhibit an error code. The data selection process uses a time-slot interchanging (TSI) technique.

Abstract: In an improved process for printing newsprint paper with a light-weight keyless printing press system the mineral oil ink standardly used is replaced by an aqueous newsprint ink having a total solids content of about 13-80% and containing about 2-30% of a colorant consisting of a pigment and/or dye, about 3-60% of a dispersed starch, and water to total 100%, wherein the percentages are by weight based on total weight of the ink. The ink may optionally contain a viscosity stabilizer if necessary to prevent retrogradation of the starch or a thickener. In a preferred embodiment the pigment is carbon black and the starch is a dextrin or waxy fluidity starch.