You can get free VoIP accounts from voipalaska.com by requesting VIN numbers. You would have to add money to the accounts for PC to PSTN calls. Their VoIP works good with a headset so you don’t need any expensive VoIP equipment to buy. It works good on wireless as I have called from my laptop 200 ft. from my router outside the concrete building. VoIP Alaska has been setting up Syber cafes and can also give you different ideas of what can be done for a start-up cafe. You can get some accounts and ask Mr.Hill questions at rh@voipalaska.com