Importance

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Abstract

In an accounting system in a B-ISDN offering video programs to a plurality of subscriber terminals coupled thereto, a timer, and an account controller are provided in each of the subscriber terminals. The timer starts to count time when a subscriber terminal receives a video program offered from the network. The account controller determines whether or not a count time in the timer has reached n sec. (e.g. 300 sec.), and transmits account starting information to the network when it is determined the count time in the timer has reached n sec.. The account controller also transmits account termination information to the network when the subscriber terminal discontinues receipt of the video program. The network is provided with an accounting unit for performing a accounting process with respect to each of the subscriber terminals from which the account starting information and the account termination information are transmitted, the accounting process starting from a time at which the network receives the account starting information to a time at which the network receives the account termination information.

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First Claim