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$30 - $250

Project Description:
Hello there,

I am looking for a linux based VOIP phone to run always, auto answer all incoming calls and have the ability to make a outbound call via a button connected to the GPIO port.

In short I want to create a Door phone - it as well needs to be able to detect DTMF during the call in order to control a relay.

I was looking for it to be created in PJSIP, but maybe open to other ideas.

Skills required:
Linux, PHP, Software Architecture
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