Help - I want to control a DTMF device over phone line with Photon

photon
Tags: #<Tag:0x00007fe21fa1d548>

#1

Hello - just getting up to speed on the Photon and have a project objective. I want to control an old school door access device currently wired as a wired phone interrupter DTMF receiver. i.e. phone rings, you push a digit to open the door.

Any suggestions on how to either program the Photon to generate DTMF signals or a compatible shield etc?

End objective is device that taks phone line off hook, generates a series of DTMF tones on phone line, and puts phone back on hook after short delay.


#2

Welcome to the community.

When you have these ideas you can always search for what you want and add Arduino. I found this: