Dual communication system, cellular communication terminal and dual communication method therefor
First Claim
1. A dual communication system including cellular phone communication means and WLAN (Wireless Local Area Network) communication means having respective proper telephone numbers, characterized in that:
- the cellular communication terminal is provided with a function to register the telephone number of the WLAN communication means to the cellular phone switching network and a function to register the telephone number of the cellular phone communication means to the IP (Internet Protocol) telephone switching network.
1 Assignment
0 Petitions
Accused Products
Abstract
A dual communication system comprises a cellular communication terminal 1 having a plurality of communication means. The cellular communication terminal 1 is provided with a function to register the telephone number of WLAN communication means 12 to cellular phone switching network 100 and a function to register the telephone number of cellular phone communication means 11 to IP telephone switching network 200. When it is impossible to communicate with the cellular phone communication means 11 of the cellular communication terminal 1, the cellular phone switching network 100 automatically transfers any receiving call to the previously registered telephone number of the WLAN communication means 12. On the other hand, when it is impossible to communicate with the WLAN communication means 12 of the cellular communication terminal 1, the IP telephone switching network 200 automatically transfers any receiving call to the previously registered telephone number of the cellular phone communication means 11.
20 Citations
24 Claims
-
1. A dual communication system including cellular phone communication means and WLAN (Wireless Local Area Network) communication means having respective proper telephone numbers, characterized in that:
the cellular communication terminal is provided with a function to register the telephone number of the WLAN communication means to the cellular phone switching network and a function to register the telephone number of the cellular phone communication means to the IP (Internet Protocol) telephone switching network. - View Dependent Claims (2, 3, 4, 5, 16, 17, 18)
-
6. A cellular communication terminal which is installed with at least cellular phone communication means and WLAN (Wireless Local Area Network) communication means having respective telephone numbers, comprising:
a function to register the telephone number of the WLAN communication network to the cellular phone switching network and a function to register the telephone number of the cellular phone communication means to the IP (Internet Protocol) telephone switching network. - View Dependent Claims (7, 8, 9, 10, 19, 20, 21)
-
11. A dual communication method to be used in a dual communication terminal installed therein at least cellular phone communication means and WLAN (Wireless Local Area Network) communication means having respective proper telephone numbers, wherein the cellular communication terminal having:
-
a processing to register the telephone number of the WLAN communication means to the cellular phone switching network, and a processing to register the telephone number of the cellular phone communication means to the IP (Internet Protocol) telephone switching network. - View Dependent Claims (12, 13, 14, 15, 22, 23, 24)
-
Specification