| 摘要 |
<p>Electronic debiting call meter (1) preferably intended for a subscriber"s telephone set (3). The debiting call meter (1) comprises an inductive detector (2) and a calculating/presentation unit (4) and is preferably placed beneath the telephone set (3) for facilitating the inductive coupling. When the subscriber lifts the receiver for making a call the debiting call meter (1) is switched on by means of a control member (84) which switches on the voltage to the debiting call meter (1) and resets the electronics. The charge pulses, which during the call are transferred on the telephone network from the telephone station to the subscriber"s telephone (3), are detected by the detector (2), which delivers a signal to the calculating/presentation unit (4) for each marking signal. This signal causes that an optional preset marking rate is added to an accumulator arranged in the debiting call meter (1). The content of the accumulator is detected and presented on an indicator (10), which e.g can be a LCD-display. The subscriber can then continuously read the accumulated cost during the call. </p> |
