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SIP-GSM Gateway for Android -- 2

$1500-3000 USD

Closed
Posted over 9 years ago

$1500-3000 USD

Paid on delivery
Have you done it already ? or have some ? send me proof that you can make calls sip to gsm and have both way audio marcin(at)[login to view URL] then we will talk about rest I need an application that can send/receive calls through SIP (Can use any sip stack like sipdroid) and forward it to the GSM network. The application should then forward the audio and convert from SIP to GSM and vice versa. The app should be able to run on cheap devices (+-100$). I was thinking on a way to emulate a headset and set it as default, so just need to initiate a call on gsm network using core android functions and audio will be automatically forwarded. Maybe this is a solution. Codecs: Minimum g711, desired g729. Full description below. Please review and message me with considerations. If any requirements are unable to be met, please let me know before we make a deal. Summary o The goal of this project is to develop an Android application that can send calls through SIP and forward them to the GSM network AND receive calls from GSM and forward to SIP. The application should then forward the audio and convert from VoIP (RTP) to GSM and vice versa. o The app should be able to run on cheap devices (+-100$). General o Deliveries o The application working in APK format o Full source code o Simple manual for compiling and generating the application from source Features o Route call from SIP to GSM o Route call from GSM to SIP o Convert audio from/to SIP and GSM networks o Can have 2 or more GSM chips (Only one call simultaneous but may choose the chip) o Must be able to run on cheap devices like Samsung galaxy Y or Chinese devices like this ([login to view URL]). o Able to run on Android 2.2 and up. Application Configurations o Enable or disable the app o Enable to receive calls only on wifi or all networks o Enable to route calls from GSM to SIP o Choose a fixed number to send the call o Enable to route calls from SIP to GSM o Route the call to number on INVITE field or a custom field Or route the call to a fixed number defined by user o Must run on background o Must be very lightweight to run on small memory devices o Configure SIP Accounts o Create a mini dialplan to choose which chip to use based on techprefix Sip Requirements o Register on Sip Proxy/Gateway o Receive call authenticated by IP, user/pass or no authentication. o Make calls with or without authentication o Forward DTMF digits using RFC2833 or inband o Use codec G711 and GSM o Be able to use codec G729 o Create a mini dialplan to choose which chip to use based on techprefix, per SIP Account o Hability to register more than 1 SIP account (but receive just 1 simultaneous call) o Be able to store a CSV with all calls made
Project ID: 6826627

About the project

15 proposals
Remote project
Active 9 yrs ago

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$5,263 USD in 30 days
4.7 (42 reviews)
7.8
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$3,157 USD in 30 days
5.0 (27 reviews)
7.1
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Hi, I (Myself a senior PHP, ASP.NET programmer using C# and VB) have a team having experience of more than 10 years in developing web and mobile applications. I have a team of expert programmers who write robust and bug-free codes at the very first instance. After seeing our quality of work and the cooperation offered to you even after the work has been delivered to you, you’ll come to us again and again to avail our services. I read through the job details extremely carefully and I am absolutely sure that I can do the project very well. I can achieve the results that you are asking for within your timeframe and budget. I am confident I can exceed your expectations and I would love to work on your project. Thanks, Priyanka
$3,092 USD in 60 days
4.9 (29 reviews)
6.9
6.9
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Hello sir. I'm a passionate iOS/Android developer with 6 years rich experience. I had worked extensively with objectiveC, swift, Java, C++, PHP, XCode, Eclipse to have a strong skill on OOP and beautiful design patterns Worked in Global software app development teams during my last 5 years. So gained rich experience and knowledge in iOS/Android app development. Your project is one of my favorite and qualification. And i have quality-oriented programming habit, and very swift in delivery. My communication and working time is flexible. It would be more specific once we communicate with each other. If you could give me a chance to work, i will do my best and high quality product to realize your ideas into life. I hope we will be good business partner via this chance Regards
$1,578 USD in 30 days
4.8 (16 reviews)
6.6
6.6
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being a fresher and a beginner, gaining experience as well as money is most important for me. so, i assure you that you will be delivered a good quality product on time.
$2,777 USD in 30 days
0.0 (0 reviews)
0.0
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Member since Jul 21, 2013

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