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    • 6. 发明授权
    • Communication with a non-telephone terminal via a telephone switching
network using two consecutive calls
    • 通过使用两个连续呼叫的电话交换网络与非电话终端进行通信
    • US4995109A
    • 1991-02-19
    • US356209
    • 1989-05-24
    • Masato ArizumiNorio OzawaYasurou Fukawa
    • Masato ArizumiNorio OzawaYasurou Fukawa
    • H04M11/00
    • H04M11/00Y10S379/902
    • A telecommunications system allows data communications between a data center and a non-telephone terminal via a telephone switching network. A terminal adapter connected to a first telephone line of the network is also connected to the non-telephone terminal and a telephone terminal. A center adapter is connected between the data center and a second telephone line. The center adapter originates a first call destined to the terminal adapter and releases it upon detecting the call terminating to the terminal adapter. The center adapter then originates a second call destined to the same terminal adapter. The center adapter detects the successive terminations of the two calls to connect the telephone line to the non-telephone terminal to allow data transmission between the data center and the non-telephone terminal.
    • 电信系统允许经由电话交换网络在数据中心和非电话终端之间进行数据通信。 连接到网络的第一电话线的终端适配器也连接到非电话终端和电话终端。 中心适配器连接在数据中心和第二条电话线之间。 中心适配器发起发往终端适配器的第一个呼叫,并且在检测到终端适配器的呼叫时将其释放。 然后,中心适配器发起发往同一个终端适配器的第二个呼叫。 中心适配器检测两个呼叫的连续终止,以将电话线连接到非电话终端,以允许数据中心和非电话终端之间的数据传输。