Incoming connection switching system

Abstract

Abstract PURPOSE:To eliminate a need of the manual operation to monitor the process of line connection on the originating side and to easily receive the data communication by a terminal equipment on the terminating side by sending a switching signal following a voice message after the completion of telephone line connection to automatically perform switching from a handset to a MODEM. CONSTITUTION:A switching signal I is the center recognition signal which reports a request of data communication from a center terminal, and this signal I is transmitted from the center terminal, and a terminal equipment on the terminating side is provided with a PB signal detector, and this terminal equipment disconnects the handset to send a response signal when detecting the switching signal I from the originating side. When receiving this response signal, the center terminal connects the MODEM on the originating side to the telephone line to complete arrangements for transmission after transmitting a switching signal II indicating the connection to the MODEM. The switching signal II has a combination of PB signals different from those of the switching signal I the response signal, and the terminal equipment connects the MO DEM to a subscriber telephone line when detecting this signal II. Thus, a responder who hooks off the handset at the time of telephone ringing on the terminating side can perform the data communication even if he does not know the switching operation of the terminal equipment.

Inventors

• 👤 Masashige Sumiya
• 👤 炭谷　正滋

Bibliographic Details