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Alternative approach to the design of stored-program-controlled telephone exchanges

Alternative approach to the design of stored-program-controlled telephone exchanges

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© The Institution of Electrical Engineers
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Stored-program-controlled (s.p.c.) telephone exchanges have been under active development for the last ten years, and many are now in public service. The problem of economic provision of a system, for the smaller exchanges, has not yet been solved. This paper suggests an alternative approach to that of monolithic control, where the system is completely dependent on a single processor complex. The alternative approach is based on well established electromechanical-system principles of system design, but may still provide the advantages claimed for an s.p.c. system.

Inspec keywords: communications applications of computers; communications applications of control; telephone exchanges; automatic telephone systems; programmed control

Other keywords: communications applications of control; design approach; small telephone exchanges; stored program controlled telephone exchanges; system design; electromechanically system principles; communication applications of computers

Subjects: Communications computing; Switching centres and equipment; Control applications in telephony

References

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      • Hemmings, W.A.C.: `Telephone switching based on system 250', IEEE international switching symposium record, 1972, p. 514–519.
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      • Lorétan, R.P.: `Security principles in electromechanical telephone exchanges-A comparative study', Report No. 87, Telecommunication Systems Group Report, 1973.
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      • G.N. Lawrence , P.J. Hyde . The Mark I, processor: the system and its applications. GEC Telecommun. , 6 - 12
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      • Hills, M.T.: `A computer-controlled switching system for experimental use', IEEE international switching symposium record, 1972, p. 503–508.
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      • Cheesman, D.: `Considerations in the design of a remote processor controlled switching system', IEEE international switching symposium record, 1972, p. 490–496.
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      • Habara, K., Mitsugi, M.: `Remote control electronic switching systems', IEEE international switching symposium record, 1972, p. 164–170.
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      • S. Ellstan , P.A. Mannby . Stored-programcontrol register system ANA30 for cross-bar exchanges. Ericsson Rev. , 131 - 145
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