PHONE SERVICE NETWORK FOR PROVIDING ADDITIONAL SERVICES TO A PSTN AND INTERNET PHONE SUBSCRIBER USING VOIP GATEWAY WITH INTERACTIVE VOICE RESPONSE FUNCTION, AND METHOD FOR ADDITIONAL SERVICE THEREOF

摘要

the present invention is an interactive voice response (IVR: Interactive Voice Response) features a built-in VoIP gateway for use by relates to telephone service telephone service network that can provide additional services to the subscriber and value-added services that way. ; telephone service network according to the invention, between the public switched telephone network (PSTN) and a PSTN phone for performing a voice call through the Internet to perform voice communication over the Internet, telephone network, or PSTN telephones and the Internet telephone The performance of the interface, in response to the additional service identification number received from the calling party telephone service announcement to guide the additional services available for the identification number received by the caller telephone and the guide signal received from the caller telephone in response to the cement for processing comprises a VoIP gateway. By this IVR ;, is using a VoIP without having to build a separate intelligence network gateway according to the present invention to provide a variety of telephone services to telephone subscribers added.