Patent ID: 6615041
Filing Date: 2003-09-02
Classification: H01L,H04L,H04W

Abstract:
A method to allow a wireless unit that is roaming in a visited system to receive communication services in the visited system based on registration information the wireless unit provides to a visited mobile switching center (MSC-V) in the visited system, the method comprising:A. in response to receiving the registration information, causing the MSC-V to route a registration message to an international gateway; B. in response to receiving the registration message, causing the international gateway i. to create a new registration message, the new registration message including an identification of the MSC-V; and ii. to route the new registration message to a home mobile switching center (MSC-H) of the wireless unit; C. in response to receiving the new registration message, causing the MSC-H i. to validate the wireless unit, ii. to create a response, and iii. to route the response to the international gateway; D. in response to receiving the response, causing the international gateway i. to create a new response, and ii. to route the new response to the MSC-V; and E. in response to receiving the new response, causing the MSC-V to provide the wireless unit with the communication services in the visited system.