Need to create APIs for A2Billing.
1) To create user signup, modify user details
2) Add / Remove Credits to User account
3) Assign / Revoke / Forward DIDs to user account
4) Show CDRs for calls made by the user
Using the above API create a Mobile website which interacts with A2Billing Server in the backend.
A2Billing Customization Experience is necessary to bid for project, anyone bidding should be able to demonstrate the above experience. If you dont understand A2Billing then dont bid !!
I have experiencie in A2billing,asterisk,mysql,php, SIP and voip.
i work with plataform prepaid ,developer with a2billing. I customized the a2billing according to project needs