INTERNET TELEPHONE SET, CONTROL DEVICE AND NETWORK SERVER TO BE USED FOR INTERNET TELEPHONE, INTERNET TELEPHONE SYSTEM AND CALLING METHOD USING INTERNET TELEPHONE

摘要

PROBLEM TO BE SOLVED: To automatically call again a telephone set belonging to the same network group without interposing operator's operation even when a telephone set of a destination desired to call is busy.;SOLUTION: An inputted telephone number is called, an IP address corresponding to the telephone number is received from a server and when presence of a special symbol is confirmed in a host address part within the IP address, access is performed on the basis of the IP address resulting from converting the special symbol into a numeral (ST702). When the destination is busy, the converted numeral is made to increment to generate a new IP address (ST708) and on the basis of the IP address, the other destination is accessed again (ST702).;COPYRIGHT: (C)2005,JPO&NCIPI