| 摘要 |
PURPOSE: A system of sending an e-mail and performing voice communication over the Internet is provided to send an e-mail to the other party, and at the same time to enable message transmission and a voice call through communication media, such as a mobile communication terminal, a wired phone and a PDA(Personal Digital Assistant), thereby quickly checking whether the e-mail is correctly sent to the other party. CONSTITUTION: A user connects an operator server to get user authentication(S100). The user connects the operator server to check received e-mails and selects e-mail sending(S200). The user selects whether to send the e-mail only or through another communication device(S300). If the user selects sending an e-mail only, the e-mail is sent to an e-mail address of the other party(S400). If the user selects sending an e-mail through another communication device, contact information of the other party is searched in a database and selected(S500). The user selects a desiring communication system(S600). If the user selects e-mail sending or voice communication through a computer of the other party, a mail server is connected(S700). If the user selects message transmission to a mobile communication terminal or a PDA of the other party, a message server is connected(S800). If the user selects voice communication through the mobile communication terminal or a wired terminal of the other party, a mobile communication exchange or a telephone office exchange is connected through a VoIP(Voice over Internet Protocol) gateway(S900,S910,S920). If communication is completed, required cost is calculated in an accounting server(S930). |
