Estimating the demand for ADSL and ISDN services in Greece

Demetrius Yannelis, Apostolos G. Christopoulos, Fotis G. Kalantzis

    Research output: Contribution to journalArticlepeer-review


    The aim of this paper is to investigate the demand for broadband services in Greece and to estimate the price elasticity of the demand for ADSL and ISDN services as well as the cross-price elasticity between the two services. The empirical analysis uses the 384 kbps connections since for the period examined, over 85% of the total ADSL customers in Greece are connected at this bandwidth. The empirical analysis is based on an ad-hoc specification of the demand equation, with no reference to the utility maximization problem of the representative consumer. The results of the analysis show that both demands are inelastic. In addition, cross-price elasticity for ADSL is negative, indicating that ISDN is a complement to ADSL, whereas the demand for ISDN is almost neutral to ADSL.

    Original languageEnglish
    Pages (from-to)621-627
    Number of pages7
    JournalTelecommunications Policy
    Issue number10-11
    Publication statusPublished - Nov 2009


    • ADSL
    • Broadband
    • Cross-price elasticity
    • ISDN
    • Own-price elasticity


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