| 摘要 |
PURPOSE:To avoid the competition of a dial number control function and an abbreviated dialling transmission function without changing a conventional constitution especially, by providing a control means for stopping the operation of a dial number control means, when it is decided that a deciding means belongs to the first area. CONSTITUTION:As for the contents of an abbreviated dialling memory CDM, and an automatic dial memory ADM, a CPU 14 stores them in accordance with each dial number registering operation from each key telephone set ST 41-4m, and if a number display operation is executed in one ST 4, the CPU 14 reads out the corresponding number from the CDM or the ADM, and transmits it as a control data, therefore, the CPU 35 of the ST 4 displays a dial number of controlling a display circuit DP 36. When an allowable number area for registering a transmission allowable number for controlling the dial number is also provided on a variable memory RAM 16, and plural, and also, for instance, allowable numbers of each upper 3 digits are registered, the CPU 14 checks the upper 3 digits of the dial transmission number to the wires 21-2n from each ST 41-4m are checked, and if it is not the allowable number, a dial number control for inhibiting the transmission is executed.
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