Sip to GSM gateway for Android

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Bids
14
Avg Bid (USD)
$2121
Project Budget (USD)
$300 - $700

Project Description:
My client needs to use an android cellphone as an asterisk channel/Gateway. His aim is to make phone calls using his Asterisk PBX through a cellphone running android.
You are free to choose how to implement this feature. All that is required is that in the end the Android phone will be acting as a SIP or IAX to GSM channel/trunk/FXO and other SIP devices can connect and make phone calls using this.

You choose the best way to do it:
Add the feature to SIPDroid: http://code.google.com/p/sipdroid/issues/detail?id=864
Add the feature using the BatPhone Asterisk Build: https://github.com/carlosdesouzamoura/antroid-trunk-sip-to-gsm-gateway-batphone
Or do it your own way.

Skills required:
Android, Asterisk PBX, Mobile Phone, VoIP
About the employer:
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