Patent ID: 8489713
Filing Date: 2013-07-16
Classification: G06F

Abstract:
1. A cable modem, comprising: at least one processor; and a storage system operable to store an original public Internet protocol (IP) address of the cable modem in an original country, a mapping relationship among a plurality of country codes, a plurality of public IP address ranges, and a plurality of multimedia terminal adapter (MTA) parameter configuration files, and one or more modules stored in the storage system and configured for execution by the at least one processor, the one or more modules comprising instructions: to obtain a new public IP address of a current country in which the cable modem is located; to determine a public IP address range that the new public IP address belong to, the determine according to the mapping relationship stored in the storage system; to determine whether the new public IP address and the original public IP address belong to same one public IP address range according to the mapping relationship stored in the storage system; to replace the original public IP address in the storage system with the new public IP address and select a country code corresponding to the new public IP address according to the mapping relationship stored in the storage system if the new public IP address and the original public IP address belong to different public IP address ranges; to select one of the plurality of MTA parameter configuration files according to the selected country code; and to configure the cable modem with the selected one of the plurality of MTA parameter configuration files.