Ask for references Business, then you required trade reference, ask the companies or persons you found in trade reference, ask them regarding company payments time, and how much years working with them, making sure regarding persons names, In this way, you can make sure that people who deal with them, their names are not fake
The existence of a financial intermediary to ensure payment of invoices, help greatly to protect your business, it is a company that booked the money in advance before the start of traffic, and in case of fraud in payment, this is the request for evidence to know who is right.
When you want start Business with new Voip Provider, try work with real voip providers, registered company, ask for license, ask for register ID, ask for Real Address, then check they address, make some phone calls.
Try search in google and yahoo and bing about his email, IP address, name, Company name and see how Many Places listed, and ask the peoble he add them, and read in google if he doing any voip fraud work.
check voipblacklist or voip fraud list
