simple SIP dialer for symbian/Android mobile phones

I require a VERY VERY simple SIP client for Symbian OS + Android OS

I have purchased a Licensed Intel IPP library for G729/G723 codecs with 1 year of valid support/updates

Here is the list of the basic requirements:

1) SIP Server IP/domain needs to be provisioned by HTTP URL

2) SIP Dialer should work in most editions of Nokia phones like N Series, E Series and 5th editions like Nokia 5800

3) Show Balance (Get balance from a url ... url will be provided)....[Optional]

4) A minor change to make it working through my proxy server .. ( will explain you during conversation.. )

5) Dialer should work through GPRS, 3G, Wifi , Edge .. etc

IMPORTANT:

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Make sure your experience is related to this field. I know alot of developers have some ready made work to show and ready made code to sell which will be a plus point.......You MUST be familiar with the source code to answer my questions about source code and sip stack which you have used in the dialer.

Kĩ năng: Lập trình C, Lập trình C#, Lập trình C++, VoIP

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ID dự án: #1060574