Method for assigning an emergency temporary directory number to a roaming mobile unit

摘要

The present invention provides a method for assigning an emergency temporary directory number to a roaming mobile unit. A request is received from a mobile unit for an emergency temporary directory number. The communication system determines if the request is a valid request. If the request is a valid request, the communication system grants an emergency temporary directory number for the mobile unit. The communication system then alerts the mobile unit of the emergency temporary directory number.