I was wondering if anyone had resources that I could reference for creating a TRS (Tip-Ring-Sleeve) 1/8" audio, to RJ9 Telephony jack conversion kit.
Effectively, I'm trying to create a bridge from an audio device (PC/MP3 player) to a telephone connection, allowing audio from the PC/MP3 player to be broadcast into a telephone line.
Trying to maintain the Keep-It-Simple-Stupid method here, so if something involves using prefabricated devices like a computer (as in a software driven method), I'm probably not going to be able to use it.