sip gsm gateway directly on phone

Closed

Description

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 use 1 or more GSM chips

o Must be able to run on cheap devices like Samsung galaxy Y or Chinese devices like this ([url removed, login to view]).

o Able to run on Android 2.2 and up.

o

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

Skills: Android, Mobile Phone, VoIP

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Project ID: #4747086

14 freelancers are bidding on average $8690 for this job

mukes1986

Check PMB Thanks!

$10309 USD in 60 days
(45 Reviews)
7.5
captek

We have made app for sip to gsm call and vice versa for android and can have a demo test for you as part of proof concept. We are VoIP solution provider and you can look into your message board for related experience a More

$9473 USD in 30 days
(5 Reviews)
6.5
technosystem

You can consider your SIP SMS Gateway project done perfectly with our highly experienced and dedicated Programming and Designing Teams. Thanks

$46391 USD in 90 days
(6 Reviews)
6.2
ghulammurtaza204

FortSolution is Providing the software development services in the following areas BlackBerry, iPhone, Android, Design, PHP, Yii, CodeIgnetor ,WordPress, Facebook applications, Magento, Drupal, SEO, SEM, ASAP .NET,C# More

$11111 USD in 50 days
(11 Reviews)
6.2
codeware1

Hello, Hope you are well and doing well!!! We are eager to work with you. We are ready to start the project right away. CODEWARE is a web & Mobile application development company providing professional design, developm More

$5154 USD in 60 days
(9 Reviews)
4.7
sincosten

Respected Client, Please check PMB for listing and confident to complete the project with quality services.. Best Regards

$5154 USD in 45 days
(6 Reviews)
4.1
miniric3

Kia ora! Mulvays.com are a NZ based web and software design company who have seen you here on the freelance market and are really excited about working with you and treating you to the full service, professional experi More

$20618 USD in 120 days
(1 Review)
3.9
iconwebservices

Hi please check your inbox Thanks

$10000 USD in 45 days
(6 Reviews)
3.4
itamarjp

please check pm.

$5555 USD in 3 days
(3 Reviews)
3.3
salesfriendgroup

Expert in Iphone, Ipad and Android Development. Our more than dozen mobile developers can complete any complex project on time and within budget....

$5000 USD in 3 days
(0 Reviews)
0.0
elkhal

I have a ready and working Android app.

$5000 USD in 1 day
(0 Reviews)
0.0
AndroLinuxMedia

Hi We worked on SIP with android. Please check our portfolio and let me know your interest.

$13333 USD in 30 days
(0 Reviews)
0.0
karmickinfo

Kindly check your pmb.

$5154 USD in 90 days
(0 Reviews)
0.0
on2it

Kia ora! on2itonline are a NZ based web and software design company who have seen you here on the freelance market and are really excited about working with you and treating you to the full service, professional experi More

$5463 USD in 60 days
(0 Reviews)
0.0
mobitech113

hi, we have great expertise in Android and other mobile platforms also.I'm interested in the project.Please look at your PMB for more details. thanks

$10000 USD in 100 days
(0 Reviews)
0.0
irshadwazid

Please check PMB for awesome work.I can do it on your time and cost with great quality.I am a top 10 oDesk developer started here now.

$5154 USD in 40 days
(0 Reviews)
0.0
Sevensapiens

Please check your PMB

$46391 USD in 60 days
(0 Reviews)
0.0
vijaybdb

We would like to build this application. Kindly check PM

$5333 USD in 40 days
(0 Reviews)
0.0