(7) In addition, the abolition of exclusive and special rights on the provision of voice telephony would have little or no effect, if new entrants would be obliged to use the public telecommunicat
ions network of the incumbent telecommunications organizations, with whom they compete in the voice telephony market. Reserving to one undertaking which markets telecommunic
ations services the task of supplying the indispensable raw material, i.
e. the transmission capacity, to all i ...[+++]ts competitors would be tantamount to conferring upon it the power to determine at will where and when services can be offered by its competitors, at what cost, and to monitor their clients and the traffic generated by its competitors, placing that undertaking in a position where it would be induced to abuse its dominant position. Directive 90/388/EEC did not explicitly address the establishment and provision of telecommunications networks, as it granted a temporary exception under Article 90 (2) of the Treaty in respect of exclusive and special rights for the by far most important service in economic terms provided over telecommunications networks, i.e. voice telephony. However, the Directive provided for an overall review by the Commission of the situation in the whole telecommunications sector in 1992.