Search

Copyright of Berliner Journal für Soziologie is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Berliner Journal für Soziologie is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Berliner Journal für Soziologie is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Berliner Journal für Soziologie is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Annals of Telecommunications is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Annals of Telecommunications is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Annals of Telecommunications is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Annals of Telecommunications is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Cet article est un compte rendu technique du onzième colloque international de commutation ISS'84 à Florence. Il complète la série des quatre articles publiés depuis 10 ans et consacrés à l'analyse des résultats essentiels des précédents colloques (Munich, Kyoto, Paris et Montréal). Il analyse l'évolution de la commutation électronique dans ses divers domaines : systèmes, réseaux, procédures et services. This paper is a technical report of the eleventh international switching symposium ISS'84 of Florence. It follows four previous papers, published during the past ten years, and dedicated to essential results of previous ISS's (Munich, Kyoto, Paris and Montreal). It summarizes the evolution of electronic switching along its various aspects, namely : systems, networks, procedures and services. [ABSTRACT FROM AUTHOR]

Cet article est un compte rendu technique du onzième colloque international de commutation iss'84à Florence. Il complète la série des quatre articles publiés depuis 10 ans et consacrés à l'analyse des résultats essentiels des précédents colloques (Munich, Kyoto, Paris et Montréal). Il analyse l'évolution de la commutation électronique dans ses divers domaines: systèmes, réseaux, procédures et services. This paper is a technical report of the eleventh international switching symposium iss'84 of Florence It follows four previous papers, published during the past ten years, and dedicated to essential results of previous iss's (Munich, Kyoto, Paris and Montreal). It summarizes the evolution of electronic switching along its various aspects, namely: systems, networks, procedures and services. [ABSTRACT FROM AUTHOR]

Ce deuxième congrès, consacré à la planification des réseaux de télécommunication, a réuni plusieurs centaines de spécialistes venus d'une trentaine de pays. Les thèmes abordés ont couvert l'ensemble des réseaux publics et privés, existants et futurs et les grands problèmes actuels : outils de planification, numérisation, sécurisation, intégration des réseaux et services. Après avoir précisé la participation du Cnet, on présente, regroupées par thèmes, les principales contributions. During this second Telecommunication Network Planning Symposium, several hundreds of delegates from thirty countries met together. The discussed topics covered public and private, existing and future networks and important present problems : planning tools, digitalization, securization, integration of networks and services. After a presentation of Cnet participation, the authors describe the main contributions, classified in different topics. [ABSTRACT FROM AUTHOR]

Copyright of Annals of Telecommunications is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Annals of Telecommunications is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Après une rapide description des principales caractéristiques des signaux multiplexés par répartition en fréquence ( mrf) et un rappel des contraintes, des objectifs de qualité et des méthodes proposées pour la numérisation de ces signaux, l'auteur étudie l'application des techniques de codage par bloc (ou codage quasiinstantané) à la numérisation d'un signal de groupe quaternaire (900 voies téléphoniques). Après une analyse théorique des performances obtenues en l'absence, puis en présence d'erreurs de transmission, il décrit deux maquettes de laboratoire qui ont permis de vérifier la validité des principes proposés. Il conclut sur la faisabilité d'un système de codage et de multiplexage numérique de deux groupes quaternaires dans un débit de 139 264 kbit/s, en accord avec les objectifs de qualité du ccitt (Comité Consultatif International Télégraphique Téléphonique). After a quick description of main characteristics of frequency division multiplexed ( fdm) signals, and some recall of the constraints, quality objectives and proposed methods to code such signals, the author studies the application of block-companded coding (or nearly instantaneous coding) to code a supermastergroup (900 telephone channels). After a theoretical analysis of performances first without, then with transmission errors, he describes two laboratory models, which have allowed to check the validity of proposed principles. He concludes with the feasability of a coding and digital multiplexing system of two supermaster groups in a gross bit rate of 139 264 kbit/s, in agreement with ccitt quality objectives ( ccitt: International Telegraph and Telephone Consultative Commitee). [ABSTRACT FROM AUTHOR]