This is a circuit Datasheet taken directly from Motorola, it is a transceiver Phone, bone connecting the circuit on a telephone line, we can extract and upload audio.
But to continue reading the datasheet, we will give various circuit applications including that of a fully featured phone. Using this integrated
MC34014 Speech Network and adding as a dialer and finally MC145409 DTMF detector MC34017 Ring. We managed to shape the entire phone.
same controls are touch-tone selector and Pulse, Hook Switch is the button to cut out as in any phone. And
you could add a Mute the Ring (interrupting the MC34017 integrated supply) and a volume control for the speaker.
The circuit is as follows:
