An experimental switching device is described that has thefollowing properties: (a) sealed metallic contacts, (b) control times in themicrosecond range, (c) coincident selection, (d) memory without holding power and (e) small size. The device, named theferreed, may beused as a crosspoint in telephone switching networks of the space-separation type. The development oj the ferreed is traced from a conceptual model, through realization oj a practical model, to possible applications in switching networks. Two methods of coincident control are discussed, and three devices related to the conceptual jerreed are described briefly.

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In AT&T, intensive attention to quality is becoming standard practice as the business units and research divisions institute procedures to improve their business and engineering processes. Our aim is to achieve total quality by satisfying customers and improving the functioning and efficiency of the processes we use to bring our products and services to market. How we adapt and improve these processes to serve and fulfill customer needs determines the company's capability to win in the marketplace. This issue of the AT&T Technical Journal presents a mosaic of some of the company‐wide efforts to improve quality.

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