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Telephone Line On-hook voltage to power supply a PCB and Telephone and work with Goertzel DTMF detect in esp32 and arduino

2 freelancers are bidding on average $156 for this job

aymos

Hello Dear You want an electronic circuit that inject 48 volt over line, we can discuss this project I have good experience with electronic and harware design best regards Aymen

$277 USD in 7 days
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Tahir9625

Man i can solve your problem .i am electronics engineer and i can deliver it within three days with 100%accuracy.

$35 USD in 3 days
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