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L'accès et l'usage téléphoniques : modélisation conjointe et tarification optimale

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  • Nicolas Curien

Abstract

[eng] Telephone access and usage : joint modelization and optimal pricing. . An integrated micro-economie modelization is developped, in order to discuss the main characteristics of telephone demand and to derive optimal pricing rules. Telephone demand is described as a joint demand for two commodities : (i) optional usage (made possible by access to the network), and (ii) actual usage. It is shown that expectations of future usage do influence individual decisions of access and network equilibrium. Revenues of the telecommunication firm and user's surplus are calculated at equilibrium, disclosing the positive externality which is brought to the existing subscribers when a new one is connected. There also exists a usage externality due to the utility yielded by incoming telephone calls. Making simple assumptions on network costs, the impact of the access and usage externalities on optimal pricing is discussed : first and second best priees are successively examined and compared to the prices which would be set by a profit maximizing unregulated monopoly. [fre] L'accès et l'usage téléphoniques : modélisation conjointe et tarification optimale. . On propose une modélisation micro-économique intégrée permettant d'abord de discuter les propriétés de la demande téléphonique, puis d'en déduire des règles de tarification optimale. On montre que la demande téléphonique est une demande jointe, pour les deux biens liés que sont, d'une part, l'option d'usage (permise par l'accès au réseau), et, d'autre part, l'usage effectif. On analyse comment les anticipations d'usage influencent la demande individuelle d'accès, et donc l'équilibre du parc téléphonique. Calculant recettes de l'exploitant et surplus des usagers à l'équilibre du parc, on met en évidence l'externalité positive que représente le raccordement d'un nouvel abonné pour les abonnés existants. Il existe, par ailleurs, une externalité d'usage, liée à l'avantage procuré aux abonnés par les appels téléphoniques qu'ils reçoivent. Formulant des hypothèses très simples sur les coûts, on étudie les conséquences de ces externalités sur la tarification optimale de l'accès et de l'usage : on examine successivement les optima de premier et de second rang, que l'on compare à la tarification qui serait pratiquée par un monopole non réglementé cherchant à maximiser son profit.

Suggested Citation

  • Nicolas Curien, 1987. "L'accès et l'usage téléphoniques : modélisation conjointe et tarification optimale," Revue Économique, Programme National Persée, vol. 38(2), pages 415-458.
    • Handle: RePEc:prs:reveco:reco_0035-2764_1987_num_38_2_408984
    DOI: 10.3406/reco.1987.408984
    Note: DOI:10.3406/reco.1987.408984
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    References listed on IDEAS

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    1. Lyn Squire, 1973. "Some Aspects of Optimal Pricing for Telecommunications," Bell Journal of Economics, The RAND Corporation, vol. 4(2), pages 515-525, Autumn.
    2. Jeffrey Rohlfs, 1974. "A Theory of Interdependent Demand for a Communications Service," Bell Journal of Economics, The RAND Corporation, vol. 5(1), pages 16-37, Spring.
    3. Roland Artle & Christian Averous, 1973. "The Telephone System as a Public Good: Static and Dynamic Aspects," Bell Journal of Economics, The RAND Corporation, vol. 4(1), pages 89-100, Spring.
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