| 摘要 |
PURPOSE:To answer to a visitor from inside or outside a house or even in absence by connecting a repeating master equipment which is paired with an entrance slave equipment to a base station of a portable telephone through a telephone line. CONSTITUTION:A voice signal sent from the entrance slave equipment 1 to the repeating master equipment 2 is passed through the telephone line 3 and converted at the base station 4 of the portable telephone into a radio wave, which is sent. The portable transmitter receiver 5 which receives this voice signal vocalizes the voice signal. The voice of the user who speaks to the portable transmitter receiver 5 is converted into a voice signal, which is converted into a radio wave; and the radio wave is received by the base station 4 and sent. The sent voice signal is received by the repeating master equipment 2 through the base station 4 and telephone line 3 is sent to the entrance slave equipment 1, which performs a vocalizing processing. Therefore, the user who goes out can answer and confirm the visitor. |
