Patent ID: 6704575
Filing Date: 2004-03-09
Classification: H04M

Abstract:
A registration method for a cordless telephone set comprising a base unit connected to a telephone line and a terminal unit connected by radio to said base unit, comprising the steps of:recording, by said base unit, a terminal unit identification number list, which includes a first terminal unit number of said terminal unit having a terminal relationship with said base unit and a terminal unit identification number unique to said terminal unit corresponding to the first terminal unit number, and a first base unit number of said base unit; recording, by said terminal unit, a base unit identification number list, which includes a second base unit number of said base unit having a base relationship with said terminal unit and a base unit identification number unique to said base unit corresponding to the second base unit number, and a second terminal unit number of said terminal unit; transmitting, by said base unit, the first terminal unit number and the first base unit number when said base unit communicates with said terminal unit; comparing, by said terminal unit which has received the first terminal unit number from said base unit, the second terminal unit number with the first terminal unit number; changing, by said terminal unit, the second terminal unit number to the first terminal unit number when the first terminal unit number is greater than the second terminal unit number; comparing, by said terminal unit, the first base unit number with the second base unit number; updating, by said terminal unit, the base unit identification number list in accordance with the first base unit number when the first base unit number is greater than the second base unit number; transmitting, by said terminal unit, the second base unit number and the second terminal unit number when said terminal unit communicates with said base unit; comparing, by said base unit which has received the second base unit number from said terminal unit, the first base unit number with the second base unit number; changing, by said base unit, the first base unit number to the second base unit number when the second base unit number is greater than the first base unit number; comparing, by said base unit, the second terminal unit number with the first terminal number; and updating, by said base unit, the terminal unit identification number list in accordance with the second terminal unit number when the second terminal unit number is greater than the first terminal unit number.