>My belief is that they are making tons of money allowing unauthenticated calls into their network, that they have no desire to actually block any calls. I've

>My belief is that they are making tons of money allowing unauthenticated calls into their network, that they have no desire to actually block any calls. I've been waiting for that to happen on cell and landline numbers. Authentication for the party calling. At this point, there's no other option than legislation. Just mandate how common voice services like landline and cellular operate their business. It needs to happen otherwise the only solution is to give them up and only do our own outbound calling, never to actually receive any calls at all. Other options like blocking all calls from non-contacts is risky because a call from a delivery driver or babysitter in an emergency will be missed. It's about the only option though for enduser today.