The invention relates to a telephone controller that controls plural
telephone sets via LAN connected to the Internet and the telephone
controller is composed of a receiver that receives a message sent by a
telephone set for requesting an IP address, a control circuit that
generates the ID and the extension of the telephone set in case the
message for requesting the IP address is received, an IP address
allocation circuit that allocates the IP address of the telephone set, a
memory that stores the ID, the extension and the IP address and a
notifying unit that notifies the telephone set of the ID, the extension
and the IP address.