Patent ID: 7113764
Filing Date: 2006-09-26
Classification: H04M,H04W

Abstract:
1. A method for transmitting an emergency call using a CDMA mobile phone during roaming, comprising: receiving position recognition information from a base station; identifying an emergency call number from an emergency call mapping table stored in a memory using the position recognition information; storing the emergency call number in a phone book of the mobile phone; linking an emergency key to the emergency call number stored in the phone book such that when the emergency key is activated, the emergency number stored in the phone book is directly dialed without comparing the stored emergency number to other emergency numbers in the emergency call mapping table; and transmitting an emergency call using the emergency key, wherein the position recognition information is periodically transmitted through an extended system parameter message (ESPM) of a paging channel from the base station, and wherein the emergency call mapping table includes position recognition information allocated by countries and emergency call numbers corresponding to the position recognition information such that the emergency call number can be identified from the emergency call mapping table using the position recognition information in the ESPM without requiring modification of the ESPM to include an emergency call number.