Basic Web Application With USSD Functionality

Avg Bid (USD)
Project Budget (USD)
$30 - $250

Project Description:
I have a simple web application which allows users login and process some transactions. I need someone who can develop USSD functionality so that users can also access the app through a USSD menu, authenticate themselves using a PIN and perform transactions. The USSD sessions will be both Push and Pull, and we only need it for demo purposes at this point.
If we can have a test gateway connection with which to test the app worldwide in real life with mobile phones, then great. If not, we can make do with a USSD simulator which shows how the USSD functionality works.
If you have any questions, please contact me.

Additional Project Description:
10/12/2013 at 11:22 ECT
We do not want to build a USSD gateway. Rather, we will use TxtNation's gateway, using their API:

Skills required:
AJAX, Mobile Phone, MySQL, PHP, Software Architecture
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