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.