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Build a cellular GSM callback system to allow unlimited outbound calls

$250-750 USD

Cerrado
Publicado hace más de 8 años

$250-750 USD

Pagado a la entrega
Hi! I want to build an unlimited outboung calls callback system similar to many websites I have already seen on the web, but improoved. This solution must work for any phone (landline or mobile and not just smartphones), so we can NOT use just apps to make the calls. Steps to make a call: 1 - Call our access number to get a busy signal and hangup. 2 - Our system detects your caller ID and calls you back in a few seconds to give you a dial tone. 3 - Enter the phone number you want to call. 4 - The system automatically connects you with your called party. In my country, we have carrier plans where calls placed to another phone from the same carrier are 100% free. We can use a GSM gateway to place the calls using the best SIM card for each call (the same carrier from the dialer and other same of destination). Then we connect the 2 calls using a VoIP software integrated with the GSM gateway. I will charge a low flat monthly price for my customers, so I need a customer database to identify the origin of the call (if who is dialing to my access number is an active subscriber). I will need consulting on choosing the best cost-benefit hardware for the GSM gateway and help on the implementation (choosing the best software, etc.). All operation must be very efficient and automated to that the product can scale. Any questions, feel free to ask. Thanks!
ID del proyecto: 7978194

Información sobre el proyecto

16 propuestas
Proyecto remoto
Activo hace 9 años

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16 freelancers están ofertando un promedio de $774 USD por este trabajo
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Hi , I have 7 years of experience in this field. I have done similar projects earlier and I can help you with this. I can also help you to setup other callback methods like sms callback and email callback apart from gsm callback. Let me know when we can start. Thanks vivek
$777 USD en 10 días
4,9 (54 comentarios)
6,5
6,5
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Hi my name is Ambiorix. I'm one of the TOP freelancer on the VOIP field. I have that solution already running for a customer. I would like to disscuss more about your project in order to provide you the right solution and the best price for this
$333 USD en 3 días
5,0 (47 comentarios)
5,6
5,6
Avatar del usuario
I have 15 years experience building telecommunication applications and can build this project for you. I will just need either access to a database with your customers phone numbers or the ability to create one. This proposal includes all of the database development, installation of server software, and configuration of any hardware gateways. Any kind of front end web development will have to be sourced elsewhere and this system will be installed on a customer provided server.
$750 USD en 10 días
5,0 (5 comentarios)
5,1
5,1
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A proposal has not yet been provided
$250 USD en 5 días
5,0 (5 comentarios)
3,5
3,5
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I have expiriance..........................................................................................................................
$250 USD en 2 días
4,2 (4 comentarios)
2,7
2,7
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Hello! We can help you with that easily as it is exactly within our scope of expertise. Regarding your task: 1) Whole work will take at least one week; 2) We would need all accesses from you (ssh access to the server itself, login and password to SIP provider) etc.; 3) You'll need to buy cards by your own, then you need to relieve pincode and shove it in the GSM-gate. + Pay attention to the legality! Sometimes necessary to take special tariff for such equipment. The remaining nuances we suggest to discuss in more details in PM. Looking forward for cooperation with you sir. With best regards, Igor Sklyarov
$750 USD en 7 días
4,9 (2 comentarios)
1,6
1,6
Avatar del usuario
I can do this project as you want. client will call your GSM modem number. call will disconnect and make a call back to the client and IVR will ask to enter destination number then it will connect to the destination number. I will provide all necessary software to do the call flow working. you will need following 1. server 2. GSM modem 3. outbound route Please let me know if you have any question
$722 USD en 10 días
2,5 (1 comentario)
1,7
1,7
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Предложение еще не подано
$666 USD en 1 día
0,0 (0 comentarios)
0,0
0,0
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More than 9 years of managing and assisting clients in Cisco Advanced networks. Cisco CCIE on collaboration. As a Bachelor of Systems Engineering I managed to get strong skills in project management, resolution and detection of problems, user training, support and documentation. Worked as a developer for over 7 years.
$888 USD en 6 días
0,0 (0 comentarios)
0,0
0,0
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Hi friend I'm actually working on a solution who can give you a great benefits in innovation and profits, if you are interested feel free to contact me. (Open GSM), mostly of my experience with the issue it's related with small and far away towns where the mobile signal it is inexistent.
$1.056 USD en 2 días
0,0 (0 comentarios)
0,0
0,0

Sobre este cliente

Bandera de BRAZIL
Belo Horizonte, Brazil
5,0
17
Miembro desde jul 18, 2014

Verificación del cliente

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