Cellular phone line

Closed Posted 2 years ago Paid on delivery

$750-1500 USD

Paid on delivery

Closed Paid on delivery

I'm searching for a device that would accept a sim card and operate on the 4g GSM network. This device would provide a "pots" or "tip and ring" output. It would need to accept incoming DTMF tones from the receiving part and from the connected dialing device. It will also need to provide line voltage or simulation. Ideally it would have an antenna port for an external antenna.

Circuit Board Layout Arduino Raspberry Pi Microcontroller PCB Layout

Project ID: #30832612

About the project

7 proposals Remote project Active 2 years ago

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7 freelancers are bidding on average $1225 for this job

avigupta0061's Profile Picture
avigupta0061

Best PCB Design Expert at your doorstep! Dear Client, We have lots of experience in Arduino, Raspberry PI, PCB and Circuit design so we able to do this project for you. We can provide a device which can be accept a More

$1250 USD in 2 days
(33 Reviews)
7.2
Dovasy's Profile Picture
Dovasy

Hi, Dear! I have read your project description in detail. I have rich experience in Arduino, Circuit Board Layout, PCB Layout, Raspberry Pi, Microcontroller, but also in relevant up-to-date technologies and I'm sure th More

$1250 USD in 13 days
(4 Reviews)
4.7
intellisenseIN's Profile Picture
intellisenseIN

Hi there, We are experienced in this field and we have already developed the SIM card based device. We are an experienced team in Embedded Hardware and Firmware development. Kindly spare some time for the interview. More

$1200 USD in 20 days
(5 Reviews)
4.4
AITSoft's Profile Picture
AITSoft

Hi there, I have read the brief details on the job listing. You can check my experience, customer feed backs and my portfolio here: https://www.freelancer.com/u/AITSoft I believe its a doable job I have great experienc More

$1500 USD in 19 days
(0 Reviews)
0.0
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