Frame Relay - for Faster and More Efficient Data Communications ...

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18Fig. 9Installing the Dehlfi system at Ericsson's Fibrocofactory in SpainFig. 8Example of printout for monitoring fibre production.The program was developed by EricssonCable's own software specialistsFi le name: er2Date : 92-03-03Mean: 0.34Standard deviation : 0.007Number of values.. .: 1732ATTENUATION at 1310 nmWeek xx - yy, supplier AA.classpart r%l123456789101112 0.50 :0.00.071.726.31.40.50.00.00.00.00.00.0ERICSSON REVIEW No. 1-2, 1992
19determined period, for presenting certainstatistical information, and for showing (bymeans of histograms) how the data is distributed,Fig. 8. Quarterly reporting of fibrestatistics is one application of this software.A production report shows the output of thefibre manufacture at Ericsson Cable's ownfactories, both for defined periods of theyear and on a per-year-basis. The figuresshow the approved amount of fibre, expressedeither in number of metres or asa percentage of the total length of drawnfibre. Report items include the number ofdrawn preforms, the relation between actualand theoretical results, and the lengthof approved or rejected fibre.Expected future developmentFlexibilityToday, 30 peripheral units (terminals, teststations, etc) can be connected to the mini-computerof the Dehlfi system. Since thesystem would be useful to more technical,production and inspection staff, an extensionis being planned according to twomain options:- Extension of the present star-shapednetwork by adding serial ports on themini-computer. This will permit connectionof 80 users- Installation of an LAN (Local Area Network).The advantage of this option istwofold: a larger number of users can beconnected, and the LAN can be connectedto the existing PC network.Both options require extension of the primarymemory to 16 Mbyte.A result of the in-house development of thesoftware is high flexibility. Programs in thedatabase and in the test stations can easilybe modified in step with the introductionof changes to design and production procedures.International applicationThe Dehlfi system is available in threelanguages: English, Spanish and Swedish.In addition to the Swedish Hudiksvallfactory, the system has been in operationat Ericsson's new Fibroco factory in Spainsince that factory was inaugurated in July,1991. The English version is used whenguiding visitors from abroad and as a platformfor translations into other languages(only Spanish, so far).All further Dehlfi development work is doneat Hudiksvall. The English and Spanishversions are updated in parallel with thedevelopment of the Swedish software. Ourobjective is to be able to provide three mutuallycompatible versions.ReferencesLarsson, A. and NygSrd-Skalman, K.: SlottedCore Optical Fibre Cable. Ericsson Review65 (1988) :3, pp. 100-107Stensland, L. and Gustafsson, P.: FibreManufacture Using Microwave Technique.Ericsson Review /65(1988):4, pp. 152-157.
Page 1: ERICSSONREVIEW1-21992Frame Relay -
Page 4 and 5: ERICSSON REVIEWBO HEDFORSPublisher
Page 6 and 7: 4Fig. 2Distributed computer environ
Page 8 and 9: Fig. 7A company's data network shou
Page 10 and 11: 8Fig. 11The frame format used for F
Page 12 and 13: 10er (DE, Fig. 12) should be set to
Page 14 and 15: Computerised System for QualityInsp
Page 16 and 17: Box 1Code39, the first alphanumeric
Page 18 and 19: 16Fig. 6Cable attenuation test at E
Page 22 and 23: Human Factors - A Key to ImprovedQu
Page 24 and 25: 221 Use the user's model2 Introduce
Page 26 and 27: 24Fig. 5Advanced Human Factors desi
Page 28 and 29: Fig. 7User interface for PBX attend
Page 30 and 31: Cell-voltage EqualisersSeries BMP 1
Page 32 and 33: 30Box1CELL-VOLTAGE EQUALISER BMP 16
Page 34 and 35: 32age, the faulty cell or the entir
Page 36 and 37: In Search of Managed ObjectsWalter
Page 38 and 39: Fig. 4The telecommunication network
Page 40 and 41: Fig. 6Functional Model illustrating
Page 42 and 43: 40Fig. 9Combination of layering and
Page 44 and 45: 42Table 2Relationship between Funct
Page 46 and 47: 44No1PPI2PPI3SLTTransport Function(
Page 48 and 49: 46Table 4SDH functions, Resources a
Page 50 and 51: The Managed Objects and their prope
Page 52 and 53: 50Fig. 21Information Model of PDH d
Page 54 and 55: Fig. 25Information Model of SDH mul
Page 56 and 57: 54Table 5Cross-connect functions, R
Page 58: Fig. 32, leftCross-connect Fragment

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