Patent ID: 7730226

Claim:
A multiple protocol address register method between a register server and a communication terminal, which has an identification used to access the register server, comprising: transmitting a first register request, for requesting to register an Internet Protocol Version 4 (IPv4) address for an IPv4 protocol using the identification of the communication terminal, from the communication terminal to the register server; storing the IPv4 address and the identification to the register table of the register server, the IPv4 address being related to the identification; setting a first communication rule at the register server, the first communication rule describing how a second register request for requesting to register an Internet Protocol Version 6 (IPv6) address for an IPv6 protocol of the communication terminal has to be generated; transmitting a response to the first register request from the register server to the communication terminal, the response including an indication that the IPv4 address is registered at the register server, and including the first communication rule; transmitting the second register request from the communication terminal to the register server generated on the basis of the received first communication rule; storing, after confirming that the second register request is created based on the first communication rule, the IPv6 address to the register table of the register server, the IPv6 address being related to the same identification; and transmitting a response to the second register request from the register server to the communication terminal to confirm registration of the IPv6 address.