In the wireless industry, available revenue time (ART) is the amount of user time available from which mobile carriers may generate revenue. For example, using a wireless mobile device for 60 minutes has enabled the carrier on whose telecommunications network the user's device is operating to generate revenue for 60 minutes. Revenue is typically generated by billing for services such as SMS, mobile video, mobile TV, or other multi-media options typical in modern convergent devices.
References
Available revenue time Wikipedia(Text) CC BY-SA