An interesting discussion among Cybertelecom members says that we should have ISPs help determine which PSAP to send calls to. After all, the ISP knows where the customer is and therefore in the best position to determine which PSAP is closest. By focusing on the ITSP we are effectively reducing the need for VoIP providers to do a job they can’t do well. At least not with current technology. I think within five years or so every device will have built-in GPS and this wont be an issue but today it is and focusing on the ISP to help determine caller location makes the most sense to me.