Skip to main content

Abstract

In digital switching system design, architectural considerations involve much more than simply replacing an analog switching network with a digital switching network. Several fundamental questions must be answered, and each must then be followed by a large number of decisions, most of which involve trade-offs. Some of the most prominent questions which require major decisions up front are:

  1. 1.

    What is the intended application and maximum size of the switching system?

  2. 2.

    What type of voice encoding should be adopted?

  3. 3.

    How should lines and trunks be interfaced and conditioned for the switching network?

  4. 4.

    What network architecture should be selected?

  5. 5.

    How should signaling and service circuits be handled?

  6. 6.

    What control concept should be used?

  7. 7.

    How should maintenance diagnostics, traffic management, and switching system administration be accommodated?

  8. 8.

    What recent technological advances should be considered for implementation in the system?

  9. 9.

    What future potential innovations should the design be planned to accommodate?

This is a preview of subscription content, log in via an institution to check access.

Access this chapter

Chapter
USD 29.95
Price excludes VAT (USA)
  • Available as PDF
  • Read on any device
  • Instant download
  • Own it forever
eBook
USD 74.99
Price excludes VAT (USA)
  • Available as EPUB and PDF
  • Read on any device
  • Instant download
  • Own it forever

Tax calculation will be finalised at checkout

Purchases are for personal use only

Institutional subscriptions

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Terry, J. B., Younge, D. R., and Matsunaga, R. T., “A Subscriber Line Interface for the DMS-100 Digital Switch,” National Telecommunications Conference Record, 1979, IEEE Press, 1979, pp. 28.3.1–28. 3. 6.

    Google Scholar 

  2. Ibid.

    Google Scholar 

  3. Caves, Terry and McWalter, Ian, “Filter Codec and Line Card Chips: the New Generation,” Telesis, No. 4, pp. 2–7 ( Ottawa, Bell-Northern Research, 1983 ).

    Google Scholar 

  4. Bellamy, John C., Digital Telephony, John Wiley and Sons, New York, 1982, p. 246 (hereafter referred to as Digital Telephony).

    Google Scholar 

  5. Ibid.

    Google Scholar 

  6. Rothmaier, Klaus, and Scheller, Reinhard, “Design of Economic PCM Arrays with a Prescribed Grade of Service,” IEEE Transactions on Communications, p. 925 ( July 1981 ). ( Hereafter cited as “Economic PCM Arrays.” )

    Google Scholar 

  7. Ibid.

    Google Scholar 

  8. Ibid.

    Google Scholar 

  9. Huttenhoff, J. H., et al., “Peripheral System,” Bell Syst. Tech. J., pp. 1037–1041 (Sep. 1977).

    Google Scholar 

  10. Pitroda, Sam G. “Telephones Go Digital,” IEEE Spectrum, p. 51 (Oct. 1979).

    Google Scholar 

  11. Economic PCM Arrays,“ p. 926.

    Google Scholar 

  12. Gotoh, Kazuhiko, and Itoh, Masahiko, “Design Concepts of a Digital Switching System for Higher Performance,” National Telecommunications Conference Record, 1980, IEEE Press, 1980, pp. 19.2.1–19. 2. 5.

    Google Scholar 

  13. Economic PCM Arrays,“ p. 932.

    Google Scholar 

  14. Ibid., pp. 930–931.

    Google Scholar 

  15. Lotze, Alfred, Rothmaier, Klaus, and Scheller, Reinhard, “TDM Versus SDM Switching Arrays-Comparison,” IEEE Transactions on Communications, p. 1455 (Oct. 1981).

    Google Scholar 

  16. Ibid.; “Economic PCM Arrays,” pp. 931–932.

    Google Scholar 

  17. McDonald, John C., “Techniques for Digital Switching,” IEEE Communications Society Magazine, p. 11 (July 1978).

    Google Scholar 

  18. Richards, Philip C., “Technological Evolution-The Making of a Survivable Switching System,” in Joel, Amos E., Jr., ed., Electronic Switching: Digital Central Office Systems of The World, IEEE Press, New York, 1982, p. 196.

    Google Scholar 

  19. Charransol, Pierre, et al., “Development of a Time Division Switching Network Usable in a Very Large Range of Capacities,” IEEE Transactions on Communications, p. 982 (July 1979).

    Google Scholar 

  20. Jajszczyk, Andrzej, “On Nonblocking Switching Networks Composed of Digital Symmetrical Matrices,” IEEE Transactions on Communications, p. 2 (Jan. 1983).

    Google Scholar 

  21. Pitroda, p. 59; Munter, Ernst A., “Digital Switch Digitalks,” IEEE Communications Magazine, p. 15 (Nov. 1982).

    Google Scholar 

  22. Munter, p. 18.

    Google Scholar 

  23. Ikeda, Yoshikaza, and Norigoe, Masamitsu, “New Realization of Discrete Fourier Transform Applied to Telephone Signaling System CCITT No. 5.” IEEE Global Telecommunications Conference Record, 1982, IEEE Press, 1982, pp. D8.1.1-D8.1.6 (hereafter cited as GLOBECOM ‘82).

    Google Scholar 

  24. Munter, p. 19.

    Google Scholar 

  25. D’Ortenzio, Remo J., “Conferencing Fundamentals for Digital PABX Equipments,” IEEE International Conference on Communications Record, 1977 IEEE Press, 1977, pp. 2.5–29 to 2.5–36 (hereafter cited as /CC ‘77).

    Google Scholar 

  26. Munter, pp. 19–20.

    Google Scholar 

  27. Ibid., pp. 20–23.

    Google Scholar 

  28. Talley, David, Basic Electronic Switching for Telephone Systems, Hayden Book Company, Inc., Rochelle Park, N.J., 1982, pp. 276–277.

    Google Scholar 

  29. Munter, pp. 17–18.

    Google Scholar 

  30. Local Switching System General Requirements, PUB48501, American Telephone and Telegraph Company, Basking Ridge, N.J., 1980, Section 7.4.11.1 (hereafter referred to as LSSGR).

    Google Scholar 

  31. Ibid., Sections 11.2 and 11.4.

    Google Scholar 

  32. Brand, Joe E., and Warner, John C., “Processor Call Carrying Capacity Estimation for Stored Program Control Switching Systems,” Proc. IEEE, p. 1342 (Sep. 1977).

    Google Scholar 

  33. Ibid., pp. 1344–1345.

    Google Scholar 

  34. Penney, Brian K., and Williams, J. W. J., “The Software Architecture for a Large Telephone Switch,” IEEE Transactions on Communications, pp. 1369 (June 1982).

    Google Scholar 

  35. Treves, Sergio R., “Maintenance Strategies for PCM Circuit Switching,” Proc. IEEE p. 1363 (Sep. 1977).

    Google Scholar 

  36. Willet, R. J., “Design of Recovery Strategies for a Fault-Tolerant No. 4 Electronic Switching System,” Bell Sys. Tech. J. pp. 3019–3040 (Dec. 1982).

    Google Scholar 

  37. Penney and Williams, p. 1372; Meyers, M. N., Routt, W. A., and Yoder, K. W., “Maintenance Software,” Bell Syst. Tech. J. pp. 1139–1167 (Sep. 1977).

    Google Scholar 

  38. LSSGR, Section 8.5.

    Google Scholar 

  39. Ibid., Section 8.6.

    Google Scholar 

  40. Switching Systems, American Telephone and Telegraph Company, New York, 1961, pp. 91–98, 105.

    Google Scholar 

  41. LSSGR, Section 8.2.2.1.

    Google Scholar 

  42. Ibid., sec. 8.2.

    Google Scholar 

  43. Telephone Traffic Theory—Tables and Charts, Part 1, Siemens Aktiengesellschaft, Munich, 1970, pp. 15–17 (hereafter referred to as Telephone Traffic Theory).

    Google Scholar 

  44. Cooper, Robert B., Introduction to Queueing Theory, The Macmillan Company, New York, 1972, pp. 65–71.

    Google Scholar 

  45. Ibid., pp. 77–80.

    Google Scholar 

  46. Engineering and Operations in the Bell System, Bell Telephone Laboratories, Inc., 1977, p. 484 (hereafter cited as Engineering and Operations).

    Google Scholar 

  47. Telephone Traffic Theory, pp. 351–359.

    Google Scholar 

  48. Defense Communications System Traffic Engineering Practices, Defense Communications Agency, 1969, Vol. XII, pp. 2–3 (hereafter cited as Traffic Engineering Practices).

    Google Scholar 

  49. Engineering and Operations, p. 485.

    Google Scholar 

  50. Traffic Engineering Practices, vol. XII, p. 5.

    Google Scholar 

  51. Engineering and Operations, pp. 493–495.

    Google Scholar 

  52. Notes on the Network, American Telephone and Telegraph Company, 1980, Section 11, p. 2.

    Google Scholar 

  53. Ibid., Section 11, pp. 6–9.

    Google Scholar 

  54. LSSGR, Section 5.3.8.

    Google Scholar 

  55. Ibid., Section 16.0.

    Google Scholar 

  56. Ibid., Section 16.2.

    Google Scholar 

  57. Ibid., Section 16.1.

    Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Editor information

Editors and Affiliations

Rights and permissions

Reprints and permissions

Copyright information

© 1985 Springer Science+Business Media New York

About this chapter

Cite this chapter

Keiser, B.E., Strange, E. (1985). Digital Switching Architecture. In: Keiser, B.E., Strange, E. (eds) Digital Telephony and Network Integration. Springer, Dordrecht. https://doi.org/10.1007/978-94-015-7177-7_11

Download citation

  • DOI: https://doi.org/10.1007/978-94-015-7177-7_11

  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-94-015-7179-1

  • Online ISBN: 978-94-015-7177-7

  • eBook Packages: Springer Book Archive

Publish with us

Policies and ethics