发明名称 Toll-free telephonic communication method and device
摘要 The present invention is a method and device for toll-free telephonic communications. According to a method of the present invention, a caller dials a toll-free number to establish a connection with a telecommunications platform. The caller then enters an authorization code that the telecommunications platform validates. If the authorization code is valid, the telecommunications platform can connect the caller to a called party or record a message by the caller for later retrieval by the called party.
申请公布号 US6463137(B1) 申请公布日期 2002.10.08
申请号 US19990316042 申请日期 1999.05.21
申请人 GEO-GROUP COMMUNICATIONS, INC. 发明人 VANJANI GOVIND W.;WILKIE DAVID
分类号 H04M15/08;(IPC1-7):H04M15/00 主分类号 H04M15/08
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