Phone Stuff
- How To Build Your Own Analog Phone Network
- How Telephones Work
- Wie funktioniert die Schaltungstechnik eines alten Telefons mit einer Wählscheibe für die Impulswahl?
- FeTAp 611 unplugged
Interfacine with a phone or phone line
- The E2210 Telephone Line Interface has the schematic in its datasheet
- good reference to figure out how to connect stuff to a phone
- How do I connect my raspberry pi to a landline phone to process calls? - Good description of the important bits of phone line magic