E911, meaning Enhanced 911 is a service used with VoIP based telecommunication systems. While E911 provides access to emergency services just as standard 911, there are some clear differences. E911 calls are typically first answered by an operator who will confirm your address information before transferring your call to your nearest PSAP (public-safety answering point). This process is to ensure you have not moved your VoIP based services and forgotten or failed to update your associated address information.