Telecommunication-time metering device utilizable by a first information transferring device for prepayment of information transfers between said first information transferring device and a second information transferring device operably associated with the telecommunication lines of a telecommunication network, said telecommunication-time metering device comprising:
- data storage means for storing telecommunication-time data representative of a prepurchased amount of telecommunication-time available to said first information transferring device, for prepayment of information transfers between said first and second information transferring devices within said telecommunication network;
- time metering means for measuring the time duration of each information transfer between said first and second information transferring devices within said telecommunication network;
- and
- data processing means for processing said stored telecommunication-time data within said data storage means so as to indicate decrements in said prepurchased amount of telecommunication-time, said decrements being substantially equal to the measured time duration of said information transfer.