发明名称 System and method for communicating with a remote communication unit via the public switched telephone network (PSTN)
摘要 The present invention is generally directed to a system and method for communicating between a personal data access device and a remote communication unit. In accordance with one aspect of the invention, a device, electrically connected for communication with a public switched telephone network (PSTN), is provided for facilitating communications between a personal data access device and a remote communication unit disposed in communication with the PSTN. The device includes a radio frequency (RF) transceiver configured for communication with a remote RF transceiver associated with the personal data access device, via an RF link, and a controller, responsive to communications received from the remote RF transceiver to maintain two-way communication between the personal data access device and the remote communication unit via the PSTN and the RF link.
申请公布号 US6618578(B1) 申请公布日期 2003.09.09
申请号 US19990301671 申请日期 1999.04.28
申请人 STATSIGNAL SYSTEMS, INC 发明人 PETITE THOMAS D.
分类号 G06Q20/00;G07F7/00;(IPC1-7):H04B1/02 主分类号 G06Q20/00
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