IP TELEPHONE SYSTEM

PROBLEM TO BE SOLVED: To provide an IP telephone system which makes it possible to use a slave telephone terminal which is made cordless in an IP telephone system which exchanges packets by VoIP and carries out communication. SOLUTION: A computer device 20 with an H.323 gate keeper function, two or more computer devices 22, 24, 26 with a protocol conversion processing function, and IP telephones 30, 32 are connected to an IP network 10. If discriminators of respective slave terminal devices 50, 52, 54 are registered to the computer devices 22, 24, 26, and a piconet of communication links between the computer devices 22, 24, 26 and the slave terminal devices 50, 52, 54 is formed, the IP telephone system 100 is built, in which the slave terminal devices originate calls to desired destination terminals, and voice speech through the IP network 10 is performed. COPYRIGHT: (C)2005,JPO&NCIPI