PURPOSE: To transmit a dial number of a telephone set by dividing opposite parties into some classes and names and telephone numbers of the opposite parties on a dictionary to have only to input the class and the name of an opposite party in voice.

CONSTITUTION: The phonemic characteristic is extracted by a voice characteristic extracting section 8 from a voice inputted from a handset 2 through the depression of a registration switch at the registration of telephone number, the characteristic is split into a symbol string at a segmentation processing section 9 and stored in a word dictionary 10. When the telephone number and the name are inputted by a key pad 5, they are inputted to a telephone number dictionary 12 and a display device 6 by a coder 15. In this case, the names are registered while being segmented into some clusters. When the class and name of the opposite party are told from the handset 2 by depressing a recognition switch, the characteristic of the processed (9) voice and content of the dictionary 10 are collated by a matching processing section 11, the dictionary 12 is retrieved 13 by a corresponding recognized word and the name and telephone number are displayed on the display section 6. When the switch 7 is depressed after conforming a desired name, a dial pulse is transmitted from a dialer 14.