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

Tags: #<Tag:0x00007fe21fa1d548>


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.


Welcome to the community.

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