Cellular phone line

Fermé Publié le il y a 2 ans Paiement à la livraison

$750-1500 USD

Paiement à la livraison

Fermé Paiement à la livraison

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 Microcontrôleur Mise en Page PCB

Nº du projet : #30832612

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7 propositions Projet à distance Actif il y a 2 ans

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7 freelances font une offre moyenne de 1225 $ pour ce travail

Photo de profil de avigupta0061
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 Plus

$1250 USD en 2 jours
(33 Commentaires)
7.2
Photo de profil de Dovasy
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 Plus

$1250 USD en 13 jours
(4 Commentaires)
4.7
Photo de profil de intellisenseIN
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. Plus

$1200 USD en 20 jours
(5 Commentaires)
4.4
Photo de profil de AITSoft
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 Plus

$1500 USD en 19 jours
(0 Commentaires)
0.0
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