EMERGENCY SERVICES DIRECTORY NUMBER REGISTRATION ASSISTANCE FOR SUBSCRIBERS USING PORTABLE INTERNET PROTOCOL(IP)COMMUNICATION DEVICES

摘要

Methods, systems, and computer program products for E911 registration assistance for subscribers using portable Internet Protocol (IP) communications devices are disclosed. According to one method, an IP address of a portable IP communications device is stored. A message is received that indicates an IP address of the portable IP communications device. Next, it is determined whether a difference between the stored IP address and the received IP address indicated by the registration message indicates a change in geographic location of the portable IP communications device. In response to determining that the difference between the stored IP address and the IP address indicated by the received message indicates a change in geographic location of the portable IP communications device, a subscriber is prompted to update stored geographic location information for providing E911 service to the subscriber.