Internet IP telephone switching system, internet-oriented IP telephone apparatus, internet IP telephone connection management method, telephone number automatic receiving/sending method, and computer readable medium on which an internet IP telephone switching program is recorded

摘要

By effectively managing the IP address of a special internet-oriented IP telephone apparatus, the IP telephone apparatus can make a call directly to another IP telephone apparatus. Moreover, by connecting two calls of both a call over the internet and a call on the Public Switched Telephone Network (PSTN), phone call can be performed from the IP telephone apparatus to a PSTN telephone terminal, or from the PSTN telephone terminal to the IP telephone apparatus.