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.
What is the intended application and maximum size of the switching system?
-
2.
What type of voice encoding should be adopted?
-
3.
How should lines and trunks be interfaced and conditioned for the switching network?
-
4.
What network architecture should be selected?
-
5.
How should signaling and service circuits be handled?
-
6.
What control concept should be used?
-
7.
How should maintenance diagnostics, traffic management, and switching system administration be accommodated?
-
8.
What recent technological advances should be considered for implementation in the system?
-
9.
What future potential innovations should the design be planned to accommodate?
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
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.
Ibid.
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 ).
Bellamy, John C., Digital Telephony, John Wiley and Sons, New York, 1982, p. 246 (hereafter referred to as Digital Telephony).
Ibid.
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.” )
Ibid.
Ibid.
Huttenhoff, J. H., et al., “Peripheral System,” Bell Syst. Tech. J., pp. 1037–1041 (Sep. 1977).
Pitroda, Sam G. “Telephones Go Digital,” IEEE Spectrum, p. 51 (Oct. 1979).
Economic PCM Arrays,“ p. 926.
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.
Economic PCM Arrays,“ p. 932.
Ibid., pp. 930–931.
Lotze, Alfred, Rothmaier, Klaus, and Scheller, Reinhard, “TDM Versus SDM Switching Arrays-Comparison,” IEEE Transactions on Communications, p. 1455 (Oct. 1981).
Ibid.; “Economic PCM Arrays,” pp. 931–932.
McDonald, John C., “Techniques for Digital Switching,” IEEE Communications Society Magazine, p. 11 (July 1978).
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.
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).
Jajszczyk, Andrzej, “On Nonblocking Switching Networks Composed of Digital Symmetrical Matrices,” IEEE Transactions on Communications, p. 2 (Jan. 1983).
Pitroda, p. 59; Munter, Ernst A., “Digital Switch Digitalks,” IEEE Communications Magazine, p. 15 (Nov. 1982).
Munter, p. 18.
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).
Munter, p. 19.
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).
Munter, pp. 19–20.
Ibid., pp. 20–23.
Talley, David, Basic Electronic Switching for Telephone Systems, Hayden Book Company, Inc., Rochelle Park, N.J., 1982, pp. 276–277.
Munter, pp. 17–18.
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).
Ibid., Sections 11.2 and 11.4.
Brand, Joe E., and Warner, John C., “Processor Call Carrying Capacity Estimation for Stored Program Control Switching Systems,” Proc. IEEE, p. 1342 (Sep. 1977).
Ibid., pp. 1344–1345.
Penney, Brian K., and Williams, J. W. J., “The Software Architecture for a Large Telephone Switch,” IEEE Transactions on Communications, pp. 1369 (June 1982).
Treves, Sergio R., “Maintenance Strategies for PCM Circuit Switching,” Proc. IEEE p. 1363 (Sep. 1977).
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).
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).
LSSGR, Section 8.5.
Ibid., Section 8.6.
Switching Systems, American Telephone and Telegraph Company, New York, 1961, pp. 91–98, 105.
LSSGR, Section 8.2.2.1.
Ibid., sec. 8.2.
Telephone Traffic Theory—Tables and Charts, Part 1, Siemens Aktiengesellschaft, Munich, 1970, pp. 15–17 (hereafter referred to as Telephone Traffic Theory).
Cooper, Robert B., Introduction to Queueing Theory, The Macmillan Company, New York, 1972, pp. 65–71.
Ibid., pp. 77–80.
Engineering and Operations in the Bell System, Bell Telephone Laboratories, Inc., 1977, p. 484 (hereafter cited as Engineering and Operations).
Telephone Traffic Theory, pp. 351–359.
Defense Communications System Traffic Engineering Practices, Defense Communications Agency, 1969, Vol. XII, pp. 2–3 (hereafter cited as Traffic Engineering Practices).
Engineering and Operations, p. 485.
Traffic Engineering Practices, vol. XII, p. 5.
Engineering and Operations, pp. 493–495.
Notes on the Network, American Telephone and Telegraph Company, 1980, Section 11, p. 2.
Ibid., Section 11, pp. 6–9.
LSSGR, Section 5.3.8.
Ibid., Section 16.0.
Ibid., Section 16.2.
Ibid., Section 16.1.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights 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