| 摘要 |
In order to estimate the number of message transmissions dispatched to a radio pager wherein messages transmitted are sequentially numbered, a transmitted signal is acquired which has been found to be directed to the pager. Thereafter, a check is made to determine if a message number included in the transmitted signal is detected. If the message number is detected, the message number detected is stored in a memory. The number of acquired transmitted signals is incremented except where the message number detected is discontinuous with a previous message number which was detected immediately before the detection of the instant message. Then the number of message transmissions is estimated or determined using the number of acquired transmitted signals, the message number detected stored in the above, and the above mentioned previous message number. <IMAGE> |
