| 摘要 |
PURPOSE:To connect a telephone set and plural kinds of terminal equipments surely by providing a signal sending means automatically the prescribed frequency signal different from each terminal equipment from the sender side to the receiver side after the line connection. CONSTITUTION:A signal transmission switch section 6 is provided with a signal transmission means sending automatically the specific frequency signal given to a computer 2 and a facsimile equipment 3 to the reception side, a one frequency signal is oscillated from two high/low groups is oscillated from the oscillator as a signal sending means, a two-frequency signal is obtained and sent to the reception side. When a slide switch 11 is slided to the position A from the neutral position, the frequency signal for the computer 2 is given and when slided to the position B, the frequency signal for the facsimile equipment 3 is sent to the reception side. The specific frequency signal is supplied to plural kinds of terminal equipments in this way to send it automatically to the reception side thereby surely connecting and changing are the telephone set and the terminal equipment.
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