| 摘要 |
PURPOSE:To recognize where a call comes from immediately by collating whether or not a full digit or a part of a caller number sent under the control of a signal control circuit is stored in a memory and selecting at least either a call tone volume or a call tone color and sending the result when stored. CONSTITUTION:A signal control circuit 5 decodes a telephone number from a caller number signal, compares it with a telephone number registered in advance in a memory 6 and it is found that the numbers are the same designation information as to call tone volume or color registered in the memory 6 in advance in combination with the said telephone number is read and a signal designation the call tone volume and tone color is sent respectively to a call tone volume switching circuit 15 and a call tone color switching circuit 16. The telephone number signal of the decoded caller is sent to a display drive circuit 9. The call signal is decoded and a control signal to operate a call circuit 17 is sent. Thus, the call circuit 17 generates a call tone set by the circuits 15,16 and a call tone is generated from a sounder 18.
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