Research Model for Time-Separation Integrated Communication

Abstract

4 new communication sustrm concept which is an important step toward an all-digilal lrlecommrcnicalion plant i s discrtssed.. .4 resrarch modrl, callrd h'SSES (h'.cprrimrntal Solid Stale Exchange), which combinrs remotc linr concrnlration, limr-separation switching and PC.11 transmission is intrtnfctcrd to drmonstrale the concrpt. The m d r l , which usrs solid statc drcricrs, works at the speed of a full-sire sgstem. I. ISTRODU('TI0SA cnmmutticat.iot1 system requires chattnels for tr:ulsmission of information and switghing arrangements to interconnect the channels. At. present, the transmission problem and switching problems arc handled separately. Transmission channels may be divided into three classes: space separation, frequency separation and time separation.All have been in use for some time. Switching arrangements may be divided into the same three classes.' The space-separation class includes all telephone switching systems in use today. Frequency separation systems have been studied and are not economically feasible a t this time. Kxploratory switching systems in the time-separation class are being considered in this country and abroad. This paper reviews the use of time-separation techniques for transmission systems aud for s\vit.ching systems, points out that the av:dability of solid state devices has revived interest i n the subject and indicates that techniques using these devices are now feasible for both systems. It shows that an integrated communication system using these techniques is much more attractive than a combination of subsystems using time separation and presents a research model which demonstrates the technical feasibility of such an integrated systemThe research model is primarily a digital system. In it, informationproducing terminalsin our specific case, telephone subscribers' sets CONCENTRATOR SWITCH SWITCHING CENTRAL NETWORK

Neural Network Parallel Computing

“…TOM (Time Division Multiplexing) hierarchical switching systems have been widely used in terrestrial networks and satellite networks because the system makes it possible to reduce the hardware cost, to enhance the trunk line efficiency, and to accommodate the additional loads (Vaughan 1979) (Joel 1979) (Eng and Acampora 1987) (Bonuccelli 1989). In (Bonuccelli 1989) Bonuccelli defined the general structure of the TDM hierarchical switching systems.…”

Media Convergence Policy Issues

“…Signs of convergence across the digital ecology have been present since the 1950s, but it is only since the 1970s that there has been substantial market restructuring as a result of disruptive innovations. In the 1950s "integrated communications" was the term coined to suggest that digital switching and transmission would work together to provide flexibility for the delivery of new services (Arnold & Guy, 1986;Flichy, 1995;Marvin, 1988;Vaughan, 1959). During the 1980s, there was a wave of enthusiasm about the idea of convergence, but this was spurred by a predominantly technology-driven vision.…”

Yöndeşmeni̇n Haber Endüstri̇si̇ndeki̇ Etki̇si̇: Haber Ajansi Çalişanlari Üzeri̇ne Bi̇r Araştirma

“…Dijital iletişime dayanan yöndeşme ilk olarak Bell Laboratuvarları'ndan H.E. Vaughan (1959) tarafından yayınlandı. Vaughan, dijital anahtarlama ve iletişimin aynı anda çalışabileceği fikrine dayandırdığı 'Bütünleşik İletişim' ifadesini icat etti (Bohlin vd., 2000:6).…”