Patent ID: 7729343
Filing Date: 2010-06-01
Classification: H04L

Abstract:
1. An IP phone system including at least one IP phone terminal, an IP phone system main apparatus for managing the IP phone, and a network information notifying device for notification of network information to IP equipment on an IP network, wherein the IP phone terminal has a network information processing unit for performing processing of network information to be received from or sent to said network information notifying device, and operates in a new registration event to send to said network information notifying device a connection request message containing therein its own MAC address and an IP address received from said network information notifying device and terminal type information indicating that the terminal is an IP phone terminal, said network information notifying device has a network information control unit for performing management and control of network information to be notified to IP equipment, and a storage unit prestoring therein an IP address of said IP phone system main apparatus, said network information control unit being responsive to receipt of the connection request message from the IP phone terminal for sending, when terminal type information in this message indicates it is a telephone terminal, a terminal registration request message containing the MAC address and IP address of said IP phone terminal and the IP address toward the IP phone system main apparatus based on the IP address being stored in said storage unit, said IP phone system main apparatus has a telephone control unit for performing management and control of said IP phone terminal and a manager unit for managing more than one telephone number while taking correspondence between the MAC address of IP phone terminal and the IP address, said telephone control unit being responsive to receipt of the terminal registration request message for referring to management information of the manager unit, for sending to said network information notifying device a registered telephone number when the telephone number is already registered with correspondence to the MAC address of the IP phone as contained in said terminal registration request message, and for registering a non-assigned new telephone number from the manager unit with correspondence to the MAC address and IP address of the IP phone indicated in said terminal registration request message and for sending to said network information notifying device, the new registered telephone number when the telephone number is not registered with correspondence to the MAC address of the IP phone, the network information control unit of said network information notifying device is responsive to receipt of the telephone number for notifying the newly registered IP phone terminal of this telephone number and the IP address of the IP phone system main apparatus as stored in said storage unit, and the network information processing unit of said IP phone terminal performs setup processing based on the telephone number received and the IP address of the IP phone system main apparatus, wherein the notification of said network information uses dynamic host configuration protocol (“DHCP”), wherein said network information notifying device is a DHCP device, and wherein the notification of terminal type from said IP phone terminal to said DHCP device is sent while being contained in a REQUEST message.