Hi,
We are building an application with asterisk and it uses one (later various) remote voip providers. For now we are using terrasip. We will have to pay all our clients communications
The problem is that we can’t allow our clients to make surcharged calls so we must block them. They can only call landlines and mobile phones all around the world.
We thought of an international numbering plan that contains all authorized prefix that are not surcharged. Maybe a list of the international surcharged numbers would be easy to get ?
Maybe you know a VoIP provider that automatically blocks surcharged numbers ?
We are still looking for a solution, is there anyone who has already faced the same problem ?
Thank you very much for your advices.
Vincent Roye.