Android Voip gateway, Call generator and SMS gateway with control

£1500-3000 GBP

Closed

Posted

over 3 years ago

£1500-3000 GBP

Paid on delivery

I need an Android application creating which can act as a GSM gateway and SMS gateway. It needs to: Voice gateway: 1. Connect via SIP (or WebRTC) to my voice switch, which is hosted on the internet and not local to the phone 2. Accept calls from the voice switch server and place call out over the GSM connection. 3. Provide two way audio for the caller/callee Call generator: 1. Accept commands to place call on GSM side and make call 2. No need to connect audio to voice server 3. Play recording (or make DTMF noises) from phone over GSM call 4. Hang up call when required SMS gateway: 1. Connect via smpp to my SMS server (or use HTTP polling to a HTTP endpoint) 2. Accept SMS from my SMS server via SMPP or HTTP polling and send it out over the GSM network 3. Accept SMS from the GSM side and relay to my SMS server via SMPP or HTTP 4. Provide DLR if network is able to provide this Control: 1. Allow mobile phone network to be turned on/off remotely (via HTTP over wifi data connection) 2. Provide information to control server about which network the sim is able to see (cell site survey) 3. Provide a mechanism to force SIM card to register on specific network only 4. Provide mechanism to make USSD commands and relay response back to control.

Android

VoIP

Project ID: 29108269

About the project

16 proposals

Remote project

Active 3 yrs ago

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16 freelancers are bidding on average £2,289 GBP for this job

@nickray9336

Hello I have a lot of experiences in developing android apps. I have worked on GSM and SMS getaways before. Please hit me up so we can discuss more about it. Best regards.

£1,950 GBP in 14 days

5.0

(33 reviews)

5.8

@Lexanderoff

Good day! Read your job posting "Android Voip gateway, Call generator and SMS gateway with control " very carefully and understand fully. I have rich experience in building mobile and web development , especially iOS development programming. I think i am very suitalble for your condition. I have earned my customer’s trust by delivering high-quality work and excellent support services at all times. Customer satisfaction is my number one priority and is the primary driver of my success. I will prove my skills and customer core points through this project. Hope we keep a nice and long term relationship together.

£2,250 GBP in 7 days

4.6

(6 reviews)

5.1

@maxlinkit

Hello I have reviewed your project posting and appreciate the time and effort you have invested in sharing a detailed work requirement of your project. I was hoping if there is a detailed BSD/BRD document with you give more information on the access controls and security measures along with more elaborate functionality details. It would be great if you can share the same or we can connect on private message for a brief minute to discuss and document missing areas. Look forward to hear from you soon Regards

£2,850 GBP in 25 days

5.0

(2 reviews)

1.6

@Fullstackfreelar

Hello Mate, I will summarize all the requirements and provide you with clear, concise notes. I'm the right candidate to complete your job along with your desired results that you are looking for. I have worked on several similar mobile apps In my past experience with more than 7 years’ great experience in App Development on Android: Java, Kotlin, and iOS: Swift/ Code/Objective-C, Flutter/Dart, React Native Firebase. I'll provide your quality work according to your instructions Please award me the project so we can discuss it more. Thanks

£1,567 GBP in 7 days

0.0

(0 reviews)

0.0

@omarboudiba

Hi Sir I am interested for your project please contact me Application development is my own profession. I have 4 years experience in the field of application development and 5 years in design. I work my profession on a daily basis for this to be highly skilled in application development

£1,500 GBP in 7 days

0.0

(0 reviews)

0.0

@RajveerBarman

I'm Expert Android Developer already Developed more application related once come on the chat so will descuss about on it .

£2,250 GBP in 7 days

0.0

(0 reviews)

0.0

@amosolobo

I have a team of software developers’ setup in Nigeria. We specialize in building our solutions using ASP.NET technologies. We build our solutions from scratch, that is all our solutions are organic. We use tools like MVC for enterprise software development and Xamarin for android and ios app development. Since 2011, we have built varieties of solution for the private sectors and our Federal and State Government ranging from Financial applications, Hospital management, API driven integrations (Google, Azure), Data mining applications, and many more. We have also built some contest project on freelancer.com and we are looking forward to getting more opportunity to show our skills. We are dynamic in our development orientation and we strongly believe that if given the opportunity, we will be able to implement your idea into a robust solution.

£2,250 GBP in 7 days