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I am looking for an application programmer to help me building a iphone VoIP Application.

I have the entire back end in place.

Thank you

Chris

We need a symbian 3rd application that can connect 2 phones with eachother and create an encrypted voip communcation

Need a VoIp application for mobile phones.

The application would be something like MSN, Yahoo, Skype voice chat feature.

To use this application users need to create an account and install the client application in the mobile phone. The users logged in to the application should be displayed as online in the contact list. User could select a user from the contact list and call. Only the users of this application could call each other.

No need to integrate with other applications like skype etc. Administrator user should be able to disable/enable users. This VoIP application should be developed on SIP protocol. The application could be developed in any language like C,C++,C# or VB.Net and for any OS like Symbian, Windows Mobile etc. Just mention the mobile phone models that the application supports. But the preferred targeted OS is Symbian since it is the most popular mobile OS. Full source code with proper comments is required.

We would urgently need to have a demo application to know your ability to do the work. The demo application could be a basic one using which 2 persons can talk.

this project contains few modules:
1. GUI
2. UDP server
3. voice engine.

u can bid on each module separately.

GUI
—
this part is about design and implementing GUI for voip application

responsibilities:
1. dial, notifications, call waiting
2. goto background/foreground
3. setting menus + setting db
4. phone book + phones db

the application is for S60 3rd FP1,FP2 and 5th edition

UDP server
———–
this module is for voip application

responsibilities:

1. connect and listen on 1 udp port – connect to deault IAP!
2. identify disconnect – notify and try to reconnect.
3. rooming – identifiy availability of wifi network.

project for S60 3rd edition FP1, FP2 and 5th edition.

Voice Engine
————-
This module is about designing and implementing an audio engine for voip application.

the app should run over nokia’s S60 3rd edition, FP1 and on wards. (VAS – Voip audio services should be used).

The engine should wrap all of the VAS activities.
the engine should use AMR codec, and handle bandwidth from 4.7-12.2 kbps.
there should be an option to use VAD to reduce delays.

the engine has an interfaces for send buffer and handle input buffer.
volume, mute, speacker etc..

Error concealment support (better voice quality!)
interface to play DTMF to downlink.
interface to dynamicly lower/increase bandwidth.

the protocol can be a propraitry one that is design for this application.

IMPORTANT: please apply for this project only if you have expirience both in symbian S60 and jitter buffer implementation.

OPTION: conference call engine.

use of speex is also a possibility.