| 摘要 |
A paging system includes a receiver adapted for receiving paging signals at a fixed bit rate of NxR where N is an integer and R is a basic bit rate. A transmitter transmits at the NxR bit rate, N being adjustable to accommodate any signal for any particular receiver. The transmitter bit rate is selected according to serial data received from a telephone exchange with a message to be transmitted. The transmitter has a degree indicating system producing a first signal representative of a degree N when it receives a signal which is representative of a bit rate NxR. It has interleaving means for N-degree interleaving of input data having the bit rate NxR, in response to the first signal, to produce an interleaved signal; and transmitting means for transmitting said interleaved signal. The receiver has means for receiving a signal whose bit rate is NxR bit rate indicating means for outputting a first signal which is representative of N; de-interleaving means for N-degree de-interleaving the received signal, in response to the first signal, to produce a de-interleaved signal; and deciding means for deciding whether or not a paging address number, which may be included in the de-interleaved signal, is assigned to the receiver. Alarm means may produce an audible alarm in response to an output of the deciding means.
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