IP COMMUNICATION TERMINAL HOUSING UNIT AND IP COMMUNICATION TERMINAL HOUSING SYSTEM

摘要

PROBLEM TO BE SOLVED: To allow an IP communication terminal in a LAN to appropriately acquire a global IP address, regardless of the type of an external router in an IP-PBX.SOLUTION: An IP communication terminal housing system includes an IP-PBX, an L2 switch to which a plurality of IP communication terminals are connected, and an external router. The external router includes: LAN-side and WAN-side line housing sections; and a router section having a DHCP server function. The LAN-side line housing section is connected to the L2 switch, and the WAN-side line housing section is connected to a first line housing section on the LAN side of the IP-PBX. A second line housing section on the LAN side of the IP-PBX is connected to the L2 switch. A transfer control section permits or refuse a transfer of a DHCP Request packet from the second line housing section on the LAN side of the IP-PBX to the first line housing section on the LAN side of the IP-PBX in accordance with a preset content.SELECTED DRAWING: Figure 1