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voip app for windows mobile

I want to develop voip app for windows mobile phones.

i am looking for developer for the following modules:

1. GUI, this should include handeling all the db (for contact, call logs and settings, etc.)

2. audio engine - interfacing with the microphone, speaker (ear piece and load speaker). raw pcm should be delivered and speex vocoder should be used to cmpress and decompress the signal.

3. sip signaling - integrating pjsip into the app.

i would like to recieve proposition as per module.

Skills: Android, Blackberry, Engineering, iPhone, MySQL, PHP, Project Management, Software Architecture, Software Testing

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About the Employer:
( 30 reviews ) Hatzor haglilit, Israel

Project ID: #3900682

6 freelancers are bidding on average $1519 for this job

jawadh

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$1700 USD in 14 days
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5.9
futuristictvw

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4.7
videoconfer

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quantumjayesh

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$1700 USD in 14 days
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vw7168807vw

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$1700 USD in 14 days
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3.3
sapneosoftp

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$1636.25 USD in 14 days
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