I have a very old phone (60 years old) and I want to control its part using a Raspberry PI:
- Microphone & speaker from the head set
- The bell
- The dial wheel
I have the electric circuit but don't recognise all of the parts.
My question is now how I can achieve the following using the Raspberry PI:
- Detect the signal from the dial wheel
- Ring the bell
- Use the microphone and the speakerphone from the headset
- Detect when the headset was liftet from the hook
Additionally I don't understand all parts in the circuit:
e.g. what is this Pulse Icon is with the caption of
I tried to decipher the circuit in order to be able to use the hardware of this phone. I used blue for the German color codes of my cables and green for the connectors:
On the phone I have the following connectors:
M1: Microphone (red)
M2: Microphone (pink)
T1: Speaker (dark green)
T2: Speaker (light green)
a: Phone line?
b: Phone line?
E: Phone line?
greencable connected n times with
It sais 300 Ohm - 7000 W - 0.13 Ku Em on the two coils, which are used for the bells.
This is the acutal phone on the inside.