I would love a way to make an IP phone that just lets my kids call their friends on their phones, and no-one else. I will take a look!
I would love a way to make an IP phone that just lets my kids call their friends on their phones, and no-one else. I will take a look!
see TinCan phone mentioned in the comments, which does this. However, it means that all their friends need to buy the phone as well.