So what is a PSTN gateway? Basically when you sign up for a Sip Number (a special computer only phone number) this number can be dialed via these PSTN Gateways. You call the gateway, and you simply enter in the number of your friends number. The best thing about these PSTN gateways is that they are available in almost every country in the world.

How to get recieve free calls from any country
1. Sign up for a SIP Number. Try GIZMO
2. Find your Gizmo SIP Number. It should look like 747-XXX-XXXX.
3. Find a PSTN Gateway. Your number can be reached from any number on this list.
4. When calling that PSTN Number, first dial *747 (for Gizmo) and then your GIZMO Sip number. If you recieved your sip number somewhere else, try this list.
5. Your GIZMO softphone will ring.

Tips for Recieving Incoming Calls Worldwide
Your GIZMO Sip Number can recieve calls from any number on the PSTN gateway list. this means your friends can call you from almost any country to your computer for the price of a local phone call.