The Experts below are selected from a list of 72 Experts worldwide ranked by ideXlab platform
F. H. Best - One of the best experts on this subject based on the ideXlab platform.
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A recording transmission measuring system for Telephone circuit testing
Bell System Technical Journal, 2013Co-Authors: F. H. BestAbstract:A number of types of measurement are made on Telephone Circuits to determine their transmission performance, these measurements being made with manually operated devices. This paper describes a transmission measuring system which automatically records the results of many of these measurements.
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New transmission measuring systems for Telephone circuit maintenance
Bell System Technical Journal, 2013Co-Authors: F. H. BestAbstract:Transmission measurements on Telephone Circuits have long been recognized as essential aids in the furnishing of good service. Recent development work has produced new testing methods and apparatus which greatly simplify and expedite transmission measuring. This paper gives a brief description of the existing and the new arrangements.
Benoit B. Mandelbrot - One of the best experts on this subject based on the ideXlab platform.
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New model for the clustering of errors on Telephone Circuits (Berger & M 1963)
Multifractals and 1 ƒ Noise, 1999Co-Authors: Benoit B. MandelbrotAbstract:This paper proposes a new mathematical model to describe the occurrence of errors in data transmission on Telephone lines. We claim that the distribution of inter-error intervals can be well approximated by a Pareto distribution of exponent less than one. It follows that the relative number of errors and the information-theoretical equivocation tend to zero as the length of the message is increased. The validity of those claims is demonstrated with the aid of experimental data obtained from the German Telephone network. Further consequences, refinements, and uses of the model are described.
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new model for the clustering of errors on Telephone Circuits berger m 1963
1999Co-Authors: Benoit B. MandelbrotAbstract:This paper proposes a new mathematical model to describe the occurrence of errors in data transmission on Telephone lines. We claim that the distribution of inter-error intervals can be well approximated by a Pareto distribution of exponent less than one. It follows that the relative number of errors and the information-theoretical equivocation tend to zero as the length of the message is increased. The validity of those claims is demonstrated with the aid of experimental data obtained from the German Telephone network. Further consequences, refinements, and uses of the model are described.
W. H. Martin - One of the best experts on this subject based on the ideXlab platform.
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Rating the transmission performance of Telephone Circuits
Bell System Technical Journal, 2013Co-Authors: W. H. MartinAbstract:This paper discusses the rating of the transmission performance of Telephone Circuits on the basis of the rate of repetitions in Telephone conversations and presents the rating method set up on this basis, which is being adopted in the Bell System for determining and expressing the data for the transmission design of the Telephone plant.
R. F. Davis - One of the best experts on this subject based on the ideXlab platform.
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The inductive coordination of common-neutral power distribution systems and Telephone Circuits
Bell System Technical Journal, 2013Co-Authors: J. O'r. Coleman, R. F. DavisAbstract:Early installations of three-phase, four-wire power distribution systems of the multi-grounded or common-neutral type in some cases created noise problems involving neighboring Telephone Circuits. Operating experience, studies of specific situations and comprehensive cooperative research over a period of years have developed means of largely avoiding difficulties of this character. The relative importance of various features of the power and Telephone systems which have been found to affect the noise induction problems involved is discussed and the general cooperative procedures, most helpful in conversions to or extensions of these types of power distribution systems, are outlined.
H. A. Affel - One of the best experts on this subject based on the ideXlab platform.
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A twelve-channel carrier Telephone system for open-wire lines
Bell System Technical Journal, 2013Co-Authors: B. W. Kendall, H. A. AffelAbstract:A new carrier Telephone system is described, together with its application in the long distance Telephone plant. By its use, an open-wire pair which already furnishes one voice circuit and three carrier Circuits may have twelve more Telephone Circuits added. Thus in all sixteen Telephone Circuits are obtained on a single pair. Several such systems may be operated on a pole line. Various problems incident to the extension of the frequency range, from about 30 kilocycles, the highest frequency previously used, to above 140 kilocycles, are discussed. Among the more important of these are the control of crosstalk between several systems on a pole line, arrangements for taking care of intermediate and terminal cables, and automatic means for compensating for the effects of weather variations on the transmission over this wide frequency range.
